Jakarta – Dozens of Acehnese rebel prisoners eligible for release under a historic peace agreement remain behind bars, separatists said Sunday, calling on the government to make sure they're freed.

"At least 86 rebels accused of treason or subversion against the state are being held in 12 jails," said rebel spokesman Teungku Jamaica. "If the government does not do anything to grant them amnesty, we will complain to international peace monitors."

Indonesia said last week it had emptied its jails of more than 1,400 rebel political prisoners, honoring a major concession in the accord signed by the government and the rebels in Finland last month.

The peace deal is seen by many as the best chance in years to end three decades of fighting that has claimed nearly 15,000 lives in tsunami-battered Aceh province.

A government official who oversaw the prison releases said Sunday he would investigate the rebels' claims.

Zulhakil Mubin, a Justice and Human Rights Department official, acknowledged that several rebels remain in prisons in the Sumatran city of Medan, but said a further investigation was required to see what crimes they committed.

The Helsinki accord said rebels accused of criminal acts would not be pardoned.

Syahroul Juned, a rebel who remained in a Jakarta jail, said he does not know why he was passed over. "I should be released," Syahroul Juned, also known as Abu Gubeng, told The Associated Press in a telephone interview.

Juned, a rebel intelligence officer, said he was sentenced to seven years in jail in 2002 for weapons possession. Though he was asked during his trial if he was involved in the bombing of a Jakarta mall that same year, he said he was cleared of those charges. "According to the Helsinki accord, I should no longer be in jail," he said.