Explosions hit the eastern port city of Trincomalee in Sri Lanka late on Tuesday in what the Sri Lanka military said was an aerial attack by Tamil Tiger separatists.
The Defence Ministry said a rebel aircraft belonging to the Liberation Tigers of Tamil Eelam dropped two bombs on Trincomalee, which government soldiers took full control of in March 2007.
"LTTE terrorists have carried an abortive air raid attempt at the naval base of Trincomalee a short while ago. According to the available information, the aircraft has dropped two improvised bombs," the Defence Ministry said in statement.
There was no immediate information on whether there were any casualties.
The Tamil Tigers attacked the Colombo airport in July 2007 with an ultralight aircraft.
The rebels since 1983 have been fighting the government to establish a separate state in the Indian Ocean Island's north and east for the ethnic Tamil minority. The rebels could not be reached for comment.