DUSHANBE — Tajik government forces demanded rebel commanders lay down their arms and hand over a former warlord Thursday, a security source said, as the two sides began a second day of talks after a battle which killed 42 people. President Imomali Rakhmon called off a military offensive after the fierce fighting on Tuesday in a remote mountain region next to Afghanistan. Troops continued to patrol the streets on Thursday. The ceasefire in the autonomous Gorno-Badakhshan region followed a campaign to capture former warlord Tolib Ayombekov, a show of strength by a government whose control over parts of the Central Asian state remains fragile 15 years after a civil war. Twelve soldiers and 30 rebels were killed in the operation to apprehend Ayombekov, who fought against Rakhmon's troops in a 1992-97 civil war before receiving a government job in the peace deal that ended the conflict. The government has offered amnesty to all rebels except the four fighters, including Ayombekov, it accuses of killing the regional head of the State Committee on National Security, whose murder on Saturday was the trigger for the military offensive. “We are trying to persuade the fighters to lay down their arms and hand over the four suspects, including Ayombekov," a senior Tajik security source said on condition of anonymity. “It could take a week or two. That's still better than shooting each other," he said. “Of course, they cannot continue forever. We've suffered heavy losses, but we will suffer more to end this situation if they do not agree to our conditions." Tajikistan, with a population of 7.5 million, is the poorest of 15 former Soviet republics. Tens of thousands died in its civil war, in which Rakhmon's Moscow-backed troops fought a loosely aligned opposition that included many Islamist fighters. Former imperial master Russia still has 6,000 troops stationed in Tajikistan, its largest military deployment abroad and a bulwark against the threat of Islamist violence spilling across the Afghan border when NATO pulls its troops out in 2014. The Organisation for Security and Cooperation in Europe (OSCE), a 56-nation security body currently under Ireland's chairmanship, issued a statement late on Wednesday urging “all parties to exercise restraint". Khorog, capital of the Gorno-Badakhshan region and the nearest town to the fighting deep in the Pamir mountains, was calm on Thursday, the security source and a local resident said. Most communications were cut off for a third consecutive day. The local resident, able to communicate via satellite link, said people had returned to work and that shops were open for a second day on Thursday. — Reuters