Chronology

12.12pm: Five thousand troops start blockading Suan Lum Night Bazaar and fire tear gas. Gunshots are heard shortly afterwards.

12.15pm: Soldiers fire tear gas to reclaim the area near Suan Lum Night Bazaar that was occupied by the red shirts on Thursday night. Protesters try to besiege the troops inside the night market, and smoke is spotted coming out from inside Lumpini Park.

12.30pm: The Bangkok Metropolitan Administration rejects police request for city officials to drag away a police truck set ablaze by protesters at Sala Daeng intersection, saying its officials would be under threat from the gunfire exchange.

1pm: Protesters burn car tyres opposite the Lumpini Boxing Stadium, about 100 metres from the Thai-Belgian Bridge. Sporadic gunfire is heard. A clash between security forces and protesters kills one man and injures 20 others, three of whom are journalists.

1.30pm: Protesters outside the boxing stadium attack security forces with slingshots and petrol bombs, while soldiers respond by firing several rounds in the air, followed by teargas and rubber bullets. Twenty protesters are arrested.

1.50pm: Protest leader Jatuporn Promphan announces on stage that the situation could lead to civil war.

2.30pm: Colonel Sansern Kaewkamnerd, spokesman of the Centre for the Resolution of the Emergency Situation, tells the press that government forces have secured the area around the Thai-Belgian Bridge and set up road barricades on Wireless Road.

3pm: Reinforcements of troops are sent to guard Government House.

3.20pm: Troops and red shirts clash at Rajprarop intersection and there is noise of gunshots. Protesters retreat to the Pratunam intersection.

4.20pm: Red-shirt leader Natthawut Saikua calls on the government to order troop withdrawal and rescind the emergency decree.

4.25pm: Residents of Rajprarop Soi 4 and Soi 6 try to boo away red-shirt protesters, who are armed with petrol bombs and looking to confront soldiers.

4.30pm: Ruam Katanyu Foundation worker Sarayut Amphan is accidentally shot in the arm during a clash in Soi Ngam Duphli.

4.50pm: Protesters throw burning tyres from the Sala Daeng overpass at soldiers waiting at the foot of the bridge. Noise of gunshots and firecrackers is heard from the protesters' side, while soldiers fire into the air periodically.

5pm: There is a confrontation between both sides near Dusit Thani Hotel and the Thai-Belgian overpass. Burning tyres cover the area with smoke.

6pm: Two grenades, believed to have been launched using an M-79 grenade launcher, explode in Soi Sala Daeng and in front of the Dusit Thani Hotel. There are no reports of injuries.

6.20pm: Explosion is heard at the red-shirts' stage on Rajprasong intersection, as speakers jump down and tell protesters to duck. No injuries or deaths are reported and the cause of the explosion remains unknown.

6.40pm: An armoured vehicle moves into Sala Daeng intersection from Wireless Road. Protesters throw bottles, petrol bombs and lit firecrackers at troops.