The government of Libya said Monday that it had lost control of its ministries to a coalition of militias that had taken over the capital, Tripoli, in another milestone in the disintegration of the state.

“The government reiterates that these buildings and the public headquarters are not safe and inaccessible, because they are under the control of armed men,” the government said in a statement. It was issued from the eastern city of Tobruk, where the recently elected Parliament has convened in territory controlled by a renegade general who has tried to stage a coup d’état.

The statement indicated the emergence of two rival centers of government — one in Tripoli and the other in Tobruk — each all but powerless. […]