TRIPOLI, Libya (AP) — Libyan security officials say a blast hit a police station in the eastern city of Benghazi, causing no human casualties but underlining the fragile security situation in the country’s east.

The explosion took place early morning Saturday at Barka police station, destroying the facade, the officials said. It was the second bombing at the site this year.

A day earlier, a militiaman was killed when armed men attacked the headquarters of his pro-government group, Uqba ibn Nafi, in the eastern city of Darnah. The area is largely controlled by radical Islamist militias, officials said.

Meanwhile, a five-star hotel in Tripoli evacuated its staff and guests after receiving a bomb threat on Friday. Officials spoke on condition of anonymity because of they were not authorized to speak to the press.