Another person has been shot dead in Aceh province where a ceasefire between Indonesian troops and separatist rebels is in force, humanitarian workers said.

Bulhaqki bin Abdul Rahman, 27, was shot Thursday at his house at Teupin Paku village in Bireuen district, apparently by two unidentified men. "Soon after they arrived, the sound of three gunshots was heard from the house," one worker told AFP on Friday.

Rahman, who died from bullet wounds in his back and a fractured skull, is the second confirmed victim of violence since Monday's peace agreement after unknown attackers shot dead a 30-year-old woman in South Aceh on Tuesday.

Such killings, which are seldom if ever solved, have been a common feature of the 26-year separatist revolt. Of more than 10,000 killed since 1976, the majority have been civilians.

There were no reports Friday of ceasefire violations by security forces or the Free Aceh Movement (GAM), four days after the peace pact was signed in Geneva.

In addition to monitors from GAM and the security forces, the deal provides for foreign truce monitors – a provision seen as crucial to the success of this agreement after earlier ceasefires broke down.

Some 50 foreign monitors from the Thai and Philippine military have yet to arrive in the province on the tip of Sumatra island.

But a team of Swedish logistical experts and temporary monitors left Friday morning for the North Aceh town of Lhokseumawe to prepare for the arrival of permanent monitors next week, said Fahmi Yunus.

Yunus is a spokesman for the Swiss-based Henry Dunant Centre, which mediated the peace deal and is helping to oversee the ceasefire.

Another Swedish logistical team and British temporary monitors left Thursday for the West Aceh town of Meulaboh.

Temporary monitors have already conducted two investigations in Aceh Besar district but found no ceasefire violations, Yunus said.

Thai Major General Thanongsak Tuwinan has been appointed as the HDC's senior envoy on the key Joint Security Committee, which will monitor the truce, investigate violations and apply sanctions.

The committee will be backed up by the 150 ceasefire monitors on the ground in six-member joint teams.