Oscar Pistorius has marked the death of his girlfriend Reeva Steenkamp with a rare statement, a year after he fatally shot her on Valentine's Day.
The South African Paralympic athlete said he is "consumed" with "pain and sadness" in the statement released to mark the first anniversary of Ms Steenkamp's death, who was killed in his bathroom in the early hours of 14 February 2013.
Prosecutors allege the track star, who is out on bail, intentionally shot her through the locked door of his bathroom after an argument, but Pistorius claims he believed Ms Steenkamp was an intruder.
If convicted of premeditated murder following the trial, due to start on 3 March, he could face life imprisonment with a minimum of 25 years before parole.
A few words from my heart on http://t.co/WNF7RXMNLP— Oscar Pistorius (@OscarPistorius) February 13, 2014
In a statement, the double amputee widely known as 'Blade Runner' said: "No words can adequately capture my feelings about the devastating accident that has caused such heartache for everyone who truly loved - and continues to love Reeva.
"The pain and sadness – especially for Reeva’s parents, family and friends consumes me with sorrow.
"The loss of Reeva and the complete trauma of that day, I will carry with me for the rest of my life."
Ms Steenkamp's parents also issued a statement on Tuesday confirming her mother June will attend the trial. "All we are looking for is closure and to know that our daughter did not suffer on that tragic Valentine's Day," they said.
Oscar Pistorius: Career in pictures
Oscar Pistorius: Career in pictures
1/34 Oscar Pistorius in Greece
Oscar Pistorius wins the 200m T44 for Men during the Athens 2004 Paralympic Games at the Olympic Stadium in Athens, 2004
2/34 Oscar Pistorius in Greece
Oscar Pistorius at the Olympic Stadium in Athens, 2004
3/34 Oscar Pistorius in Manchester
Oscar Pistorius celebrates winning his second gold medal during the VISA Paralympic World Cup Athletics at the Sport City Stadium in Manchester, 2006
4/34 Oscar Pistorius in Manchester
Oscar Pistorius shows his gold medal after winning the T44 200 m for men at the Visa Paralympic world cup at the Manchester Regional Arena, 2007
5/34 Oscar Pistorius competes in race
Oscar Pistorius competing in the men's 400m race B, 2007
6/34 Oscar Pistorius in Rome
Oscar Pistorius settles in the blocks before winning the Mens 400m 'B' race during the IAAF Golden Gala at The Olympic Stadium in Rome, 2007
7/34 Oscar Pistorius in Rome
Oscar Pistorius poses during the broadcast 'Piazza grande' on Italian TV state channel 'Rai 1' in Rome, 2008
8/34 Oscar Pistorius in St.Petersburg
(L to R) Bryan Habana, Cuba Gooding Jr and Oscar Pistorius during the Laureus welcome reception at Gimnazya in St.Petersburg, 2008
9/34 Oscar Pistorius arrives at the Court of Arbitration for Sport (CAS) in Lausanne
Oscar Pistorius arrives at the Court of Arbitration for Sport (CAS) in Lausanne to appeal his case on the second day of his hearing as he was told by the International Association of Athletics Federations (IAAF) that he could not compete in their events because the artificial legs he uses gives him an unfair advantage, 2008
10/34 Oscar Pistorius runs during a training session
Oscar Pistorius runs during a training session on the track of Emmeloord, 2008
11/34 Oscar Pistorius in Germany
Oscar Pistorius compete during the 400 meter race at the German disabled athletics championships in Berlin, 2008
12/34 Oscar Pistorius in Italy
Oscar Pistorius of South Africa relaxes prior to the 400m race in his quest to make the Olympic qualifying time of 45.55 during the Notturna di Milano International Athletics Meeting at the Arena Gianni Brera in Milan, 2008
13/34 Oscar Pistorius in China
Oscar Pistorius speaks at a press conference for the 2008 Beijing Paralympic Games in Beijing, 2008
14/34 Oscar Pistorius in China
Oscar Pistorius of South Africa celebrates after winning the gold medal in the Men's 100m T44 Final Athletics event at the National Stadium during day three of the 2008 Paralympic Games in Beijing, 2008
15/34 Oscar Pistorius in China
Oscar Pistorious (L) leads Heros Marai (C) of Italy and Christoph Bausch (R) of Switzerland in the heats of the men's 100 metre T44 classification race at the 2008 Beijing Paralympic Games in Beijing, 2008
16/34 Oscar Pistorius and Nelson Mandela in South Africa
Oscar Pistorius and former South African President, Nelson Mandela in South Africa, 2009
17/34 Oscar Pistorius in Norway
Oscar Pistorius looks on prior to the 400m B-final during the IAAF Golden League Bislett Games in Oslo, 2009
18/34 Oscar Pistorius in London
Oscar Pistorius reacts after winning the men's 400 metres T44 final race with a new world record time of 47.04 sec during the Diamond League athletics meeting at Crystal Palace in London, 2010
19/34 Oscar Pistorius in New Zealand
Oscar Pistorius of South Africa celebrates receiving his gold medal after winning the Men's 200m T44 final during day three of the IPC Athletics Championships at QE II Park in Christchurch, New Zealand, 2011
20/34 Oscar Pistorius in New Zealand
(L-R) Arnu Fourie, Henry Roos, Oscar Pistorius and Mike Samkelo Radebe of South Africa celebrate after winning the Men's 4x100m Relay T42-46 final during day eight of the IPC Athletics Championships at QE II Park in Christchurch, New Zealand, 2011
21/34 Oscar Pistorius in New Zealand
Oscar Pistorius of South Africa poses with his medals during day eight of the IPC Athletics Championships at QE II Park in Christchurch, New Zealand, 2011
22/34 Oscar Pistorius in South Africa
Oscar Pistorius in action during the 400m during day 5 of The Nedbank National Championships for the Physically Disabled from Olympia Park Stadium in Rustenburg, 2011
23/34 Oscar Pistorius in Czech Republic
Oscar Pistorius warms up before the men's 400m event at the Zlata Tretra (Golden Spike) athletics meeting in the eastern Czech city of Ostrava, 2011
24/34 Oscar Pistorius in New York
Oscar Pistorius attends the Eva Mendes launch of her new campaign for Angel by Thierry Mugler at IAC Building in New York, 2011
25/34 Oscar Pistorius in South Korea
Oscar Pistorius of South Africa speaks with Olympic gold medalist Michael Johnson of the United States during a media gathering at the Novatel Hotel prior to the 13th IAAF World Athletics Championships Daegu 2011 in Daegu, South Korea, 2011
26/34 Oscar Pistorius in South Korea
Oscar Pistorius prepares to settle into the blocks to compete in the men's 400 metres heats at the International Association of Athletics Federations (IAAF) World Championships in Daegu, 2011
27/34 Oscar Pistorius in London
South African sprint runner known as 'Blade Runner' Oscar Pistorius (C) poses for photographers with Paralympians ahead of the international Paralympic Day in central London, 2011
28/34 Oscar Pistorius in London
Oscar Pistorius poses in the press room with his Laureus World Sportsperson of the Year with a Disability trophy at the 2012 Laureus World Sports Awards at Queen Elizabeth II Conference Centre in London, 2012
29/34 Oscar Pistorius in London
Oscar Pistorius of South Africa competes in the Men's 400m Round 1 heat on Day 8 of the 2012 London Olympic Games at the Olympic Stadium in London, 2012
30/34 Oscar Pistorius receives his honorary doctorate
Oscar Pistorius holds his scroll after receiving his honorary doctorate from Strathclyde University in the Barony Hall in Glasgow, 2012
31/34 Oscar Pistorius with his girlfriend
Oscar Pistorius posing next to his girlfriend Reeva Steenkamp at Melrose Arch in Johannesburg, 2013
32/34 Oscar Pistorius in court
Oscar Pistorius hides his face in his hands in the court room during his hearing on charge of murdering his model girlfriend Reeva Steenkamp at the Magistrate Court in Pretoria, 2013
33/34 Oscar Pistorius in court
Oscar Pistorius stands in the Magistrate Court in Pretoria after appearing for the first time since being freed on bail over the Valentine's Day killing of his model girlfriend, 2013
34/34 Oscar Pistorius in court
Oscar Pistorius appeared on charges of murdering his model girlfriend Reeva Steenkamp, 2013
On Wednesday, a spokeswoman for Pistorius said he reached a settlement with a woman over an alleged assault case from 2009 because his lawyers allegedly advised him he could not fight civil and criminal legal battles simultaneously.
He was arrested and accused of causing an injury to Cassidy Taylor-Memmory, a guest at a party at his house five years ago, after allegedly slamming a door and then punching it.
More than 100 witnesses are expected to appear in court for the trial, including Pistorius' sister, Aimee and former girlfriends Melissa Rom and Samantha Taylor.