At least 30 people have been killed or have disappeared last week in the embattled Sri Lankan town of Jaffna, Tamil rebels say. The continued violence comes despite pledges to hold peace talks to end the bitter ethnic conflict. "The rate of killing and disappearance in Jaffna showed no sign of letting up," the Tamil Tigers' peace secretariat said on its website, listing the names of 30 people, most of them listed as "shot and killed". Government troops control Jaffna, but the rebels have cut off the northern coastal enclave from the rest of the island for two months since fighting closed the main A9 highway, stranding residents and blocking supplies. The Government announced it had airlifted hundreds of tonnes of goods to the area this week. But the pro-rebel Tamilnet.com website has warned of a "humanitarian crisis" as food and other supplies run out in Jaffna, and said the town remains a "boiling pot" amid increasing violence against civilians.