A doctor at one city hospital said his morgue had received at least 200 dead from six days of unrest. The doctor said his hospital, one of two in Libya's second-largest city, is out of supplies and cannot treat more than 70 wounded in similar attacks on mourners Saturday and other clashes.

Libya's protest by those frustrated with Qaddafi's more than 40 years of rule has spread to more than a half-dozen cities. Benghazi has been at the center of unrest.

But getting reliable information about the chaotic situation is difficult. Journalists cannot work freely. Information about the protest has come through telephone interviews, along with videos and messages posted online, and through opposition activists in exile.

In a Saturday report, the official Libyan news agency said authorities have arrested “dozens of foreign elements trained to strike at Libya's stability and security.” It said an investigation already was under way. It also said authorities were not ruling out that those elements were connected to what it called an Israeli plot to destabilize countries in North Africa, including Libya, as well as Lebanon and Iran.

Before Saturday's violence, Human Rights Watch estimated at least 84 people had been killed. Jamal Eddin Mohammed, a 53-year old resident of Benghazi, said thousands marched Sunday toward the city's cemetery to bury at least a dozen protesters. They feared more clashes with the government when they passed by Qaddafi's residential palace and the regime's local security headquarters.

A man shot in the leg Sunday said marchers were carrying coffins to a cemetery and were passing by the compound when security forces fired in the air and then opened up on the crowd. The latest violence in Benghazi followed the same pattern as the crackdown on Saturday, when witnesses said forces loyal to Qaddafi attacked mourners at a funeral for anti-government protesters. They were burying 35 marchers who were slain Friday by government forces.

The doctor at a Benghazi hospital said at least one person was killed by gunshots during the funeral march, and 14 were injured, including five in serious condition. He spoke on condition of anonymity for fear of reprisal, as did several other witnesses in Libya. He said some of the latest casualties were hit by machine gun fire. The US-based Arbor Networks reported another Internet service outage in Libya just before midnight Saturday night. The company says online traffic ceased in Libya about 2 a.m. Saturday, was restored at reduced levels several hours later, only to be cut off again that night.

People in Libya also said they can no longer make international telephone calls on their land lines. Abdullah said smaller protests were staged Saturday night on the outskirts of the capital Tripoli, a stronghold of support for Qaddafi, but demonstrators were quickly dispersed by security men. Besides Tripoli and Benghazi, the US State Department in a travel warning to American citizens listed five other cities that have seen demonstrations.