Philippine security forces have arrested two men suspected of involvement in last week's deadly Valentine's Day bombing in Manila. They said the men were suspected to be members of the al Qaida-linked Abu Sayyaf group, which claimed responsibility for the Manila bombing and two other attacks in the south that day which killed a total of 13 people and wounded more than 100. "Based on sketchy reports, we got a big fish," Army spokesman Lieutenant-Colonel Buenaventura Pascual told reporters, saying the two suspects were also linked to previous bomb attacks in the southern port city of Zamboanga on Mindanao island. He said a team of soldiers and police officers arrested the two in Manila early on Tuesday, but gave no further details.A senior military intelligence official told Reuters one of the suspects, Gamal Baharan, was involved in an October 2002 bomb attack outside an army training camp in Zamboanga City that killed an American soldier. A police intelligence official said the other suspected Abu Sayyaf member, Amil Hajiron, was caught based on a tip from an informant who saw a sketch of the bomb suspects on newspapers and television. Hajiron was believed to be involved in the November 2002 bombing of a Roman Catholic shrine in Zamboanga City, the police official said.