Colonel Muammar Gaddafi has apparently decided he’s not going down without murdering a lot of people.

Snipers shot protesters, artillery and helicopter gunships were used against crowds of demonstrators, and thugs armed with hammers and swords attacked families in their homes as the Libyan regime sought to crush the uprising.

“Dozens were killed … We are in the midst of a massacre here,” a witness told Reuters. The man said he helped take victims to hospital in Benghazi.

Libyan Muslim leaders told security forces to stop killing civilians, responding to a spiralling death toll from unrest which threatens veteran leader Muammar Gaddafi’s authority.

Mourners leaving a funeral for protesters in the eastern city of Benghazi came under fire, killing at least 15 people and wounding many more. A hospital official said one of those who died was apparently struck on the head by an anti-aircraft missile, and many had been shot in the head and chest.