6.00pm: Two Nato missiles explode near the Belacevac mines, west of Kosovo's capital, Pristina.
9.05pm: Tanjug news agency reports a civil servant killed in a Pristina government building.
9.20pm: Explosions reported in Novi Sad. An oil refinery and the city's last remaining bridge hit.
Wednesday 21 April
2.15am: Nato raid on Belgrade hits the Usce Business Centre, HQ of Milosevic's Socialist Party and home of radio and television stations.
2.30am: Tanjug says 10 people killed and 16 injured as Nato missiles hit a refugee camp at Djakovica in Kosovo.
5.15pm: The first of 24 US Apache attack helicopters arrives in Tirana, Albania's capital.