Straw's son files police complaint
William, 17, who embroiled his father in controversy last December when he received a caution for selling cannabis in a pub, made the complaint last November after witnessing an incident involving Chelsea fans at Euston station in London.
He is expected to be interviewed about the incident, which was filmed on closed-circuit television cameras, next week.
Officers were escorting the fans back to London from a match against Blackburn Rovers, the team William supports, when trouble broke out on the train. Police were waiting on the platform at Euston and made two arrests.
William, a passenger on the train, saw what happened and later made a complaint against four officers alleging that excessive force had been used in the incident.
John Callendar, acting superintendent of British Transport Police, said: "We can confirm that a complaint was received from a passenger on the train." He added that a complaint had also been lodged by one of those arrested, but it had since been withdrawn.
"The outstanding complaint is being investigated under the normal ... procedures and the complainant will be interviewed, probably next week."
A Home Office spokeswoman said that the issue was a private matter for the Straw family.
- 1 Video shows how to turn your phone into a 3D hologram
- 2 Artist Jamie McCartney: How The Great Wall of Vagina is a stand against 'body fascism'
- 3 Katie Hopkins reveals fear she will die during brain surgery to cure epilepsy
- 4 Dutch King Willem-Alexander declares the end of the welfare state
RideLondon 2015: Cyclist dies while climbing highest hill in Surrey during sportive
Katie Hopkins reveals fear she will die during brain surgery to cure epilepsy
Tensions flare as Confederate flag supporter reaches for gun when confronted by protests – in pictures
'Gene drive': Scientists sound alarm over supercharged GM organisms which could spread in the wild and cause environmental disasters
Tom Cruise: Reporters banned from asking actor about Scientology
Yvette Cooper: Our choice is years of Tory rule under Jeremy Corbyn – or a return to a Labour government
Is Britain really full up? Are migrants taking our jobs? Leading academic answers the most common anti-immigration claims
Calais Migrant Crisis: Deputy Mayor of Calais labels Cameron's use of 'swarm' as 'racist' and 'ignorant'
Jeremy Corbyn's anti-austerity agenda will harm poor, says Labour shadow Chancellor Chris Leslie
While we fixate on Calais, the Home Office is quietly deporting dozens of migrants on 'ghost flights'
Calais crisis: The seven claims made about the migrants - and the reality
Up to 70k DOE: Guru Careers: We are seeking an experienced Financial Director ...
Negotiable: Recruitment Genius: This company has been manufacturing high quali...
£16000 - £35000 per annum: Recruitment Genius: This company is the fairest onl...
£18000 - £20000 per annum: Recruitment Genius: A Production Planner is require...