The explosions hit the mosque at the start of weekly prayers in Libya's second city, which lies 1,000km east of Tripoli, a security source told AFP.
Two people were killed on Friday after two bombs went off inside a mosque in the eastern city of Benghazi in Libya. The devices appear to have been activated remotely using a mobile phone, according to a military source. He does not support the government in the western capital Tripoli, back by the United Nations.
Benghazi is controlled by the Libyan National Army, which is led by powerful eastern-based commander Khalifa Haftar and was battling Islamists and other opponents in the port city until late 2017. "Prompt, impartial investigations should bring perpetrators to justice".
Following last months bombing in Benghazi, video footage emerged of 10 blindfolded men being executed at the site of the attack.
High school graduation rates for 2017 show 1.2% year-over-year increase
The mayor said the city's rising grad rates prove the public schools are better than ever. The West Ada School District, Idaho's largest district, has a 84.7 percent graduation.
Libya descended into chaos after the 2011 uprising that toppled and killed ruler Moamar Gaddafi.
Mr al-Werfalli is wanted by the ICC for allegedly carrying out a number of similar killings.
Haftar, a possible contender in national elections that could be held by the end of 2018, has built his reputation on delivering stability in Benghazi and beyond, promising to halt the chaos that developed after a NATO-backed uprising ended Muammar Gaddafi's long rule almost seven years ago.
The UN is now trying to negotiate an end to the current political turmoil by agreeing parliamentary and presidential elections later this year, but there is deep scepticism over whether they will take place.