COLOMBO, Sri Lanka (CNN) -- A bomb exploded Friday night at one of the main railroad stations in the Sri Lankan capital of Colombo, slightly injuring one person, police said.
Police commandos investigate a bombing Friday on a rail platform in Colombo, Sri Lanka.
The blast went off about 7 p.m. near the No. 4 platform at the Fort Railway Station, police said.
The station is in the city's high-security zone, where the army, navy and air force headquarters are located.
The blast was the second explosion this week in that area of the capital.
On Tuesday, a bomb in a telephone booth injured two bystanders, police and military officials said.
Earlier that day, a roadside bomb struck a convoy carrying D.M. Dassanayake, a non-cabinet minister for nation building, killing him and injuring five others, police said.
Dassanayake died at a hospital after the explosion in Ja-ela, a suburb between Colombo and the island's international airport.
Police said Tamil rebels were behind the deadly attack, indicating that it was the latest episode of violence between the two sides since the government announced on January 2 that it was walking away from a six-year-old truce.
Sri Lanka's decision to pull out of the internationally brokered peace agreement goes into effect next Wednesday. Per the agreement's terms, each side was required to give two weeks' notice if it planned on withdrawing.
Even before the announcement, the cease-fire -- brokered by Norway in 2002 -- existed in name only. The two sides had resumed fighting two years ago.
The government and rebels have engaged in a brutal civil war since 1983. The rebels, formally called the Liberation Tigers of Tamil Eelam, want an independent homeland for the Tamil minority in the north and east of the island nation south of India. They cite decades of discrimination by the majority Sinhalese.
About 65,000 people died before the two sides reached the 2002 truce. E-mail to a friend