At least six people have been killed in a suspected suicide attack in the main railway station in the Sri Lankan capital Colombo, security forces say. Police said a female suicide bomber blew herself up as a suburban train pulled into a station platform.
The attack comes amid increased security ahead of celebrations on Monday to mark the 60th anniversary of Sri Lanka's independence from Britain.
On Friday, 18 people died in a blast in the central town of Dambulla.
That attack was blamed on Tamil Tiger rebels.
Colombo station is situated in the heart of the city, near the president's offices and several major hotels.
A bomb attack on the city zoo injured four people earlier on Sunday.
