MANILA, Philippines?State prosecutors have found enough evidence to recommend the filing of murder charges against Datu Unsay mayor Datu Andal Ampatuan, Jr., in connection with the killing of seven of at least 57 persons massacred in Maguindanao last Monday.

Acting Justice Secretary Agnes Devanadera told reporters that government prosecutors and National Bureau of Investigation agents continued to process, on Friday, the cases of the 50 other casualties for the filing of appropriate charges.

This developed as eight other Ampatuan clan members, including family patriarch Maguindanao Governor Datu Andal Ampauan, Sr., and Autonomous Region in Muslim Mindanao Governor Zaldy Ampatuan, have been placed on the Bureau of Immigration watch list for their alleged complicity in the grisly killings.

?The statements that we have gathered point to their involvement,? Devanadera said in a late afternoon news conference at the Department of Justice.

?They are under investigation. They are under surveillance,? she added.

Devanadera answered in the affirmative when asked if the Ampatuans, who had not been detained, as of Friday, were already being considered as ?suspects.?

?We are still in the hot pursuit stage,? Devanadera said. She said the Ampatuans involved could be arrested in the same manner the government took custody of Ampatuan, Jr., even without warrants for their arrest.