"The hospital received one body and 87 injured people with varying degrees of severity", said Fadia Al-Barghathi, the information officer of Al-Jalaa Hospital in Benghazi.
Two people were killed and 143 others, including children, were injured on Friday when an explosion hit a mosque during Friday prayers in the eastern Libyan city of Benghazi, military and medical sources said.
Twin vehicle bomb attacks hit a mosque in Benghazi's Salmani district two week ago as the worshipers exited the mosque after the night prayer, killing 34 people and injuring more than 100 others, mostly civilians. A previous hospital bulletin spoke of 62 wounded.
NAN reports that on January 23, a twin auto bombing in Libya's eastern city of Benghazi killed 35, with about 60 people wounded.
There was no immediate claim of responsibility.
"This heinous act should not provide a justification for revenge attacks".
Haftar launched his military campaign in Benghazi in May 2014 in response to a series of bombings and assassinations blamed on extremists. "Prompt, impartial investigations should bring perpetrators to justice", the group said.
Fears over potential reprisals are heightened by the reported summary execution of around 10 militant prisoners by a commander loyal to Haftar following last month's bombings.
Libya descended into chaos after the 2011 uprising that toppled and killed ruler Moammar Gadhafi. The UN-backed unity government based in the capital has struggled to assert its authority outside western Libya.
The blasts took place during Friday prayers, residents said.
On Sept. 11, 2012, suspected militants linked to Al-Qaeda attacked the United States consulate in Benghazi, killing ambassador Christopher Stevens and three other Americans.