At least 19 people were killed in a suicide attack in the Syrian capital on Sunday, the media reported.Syrian police had been chasing three suspected car bombers that were trying to enter the capital, state TV said.Police stopped and detonated two of the vehicles, but the third driver entered Tahrir Square in the capital and blew himself up after being surrounded, BBC reported.At least 19 people were killed and 12 were injured in the Tahrir Square explosion, reports said."The terrorist bombings killed and wounded several civilians and caused physical damage to the area," a police official told state news agency Sana.State TV said the attackers had planned to bomb crowded areas in the capital on the first working day after the holy month of Ramadan.No group claimed responsibility for the attack.