Colombo:Three police officers were killed when Special forces entered a house, on the outskirts of Colombo, to question suspects allegedly involved in the eighth explosion near Dematagoda on Sunday.
Special officers conduct search operation in Colombo According to reports, three police officers were killed when they went to question suspects following a tip.
Two blasts went off shortly after the officers entered the house, where it is believed that Sunday's attacks were planned.
Police said 207 people were killed and 450 wounded in eight explosions, whose targets included at least three churches and three luxury hotels.
No one has taken responsibility for the attacks, but officials say seven suspects have been arrested.
The attacks are the worst chaos Sri Lanka has seen since a bloody civil war ended a decade ago.
Read: Sri Lanka blasts: 207 killed, 450 injured