The explosion rattled near a mosque in the Libyan city of Benghazi, leaving eight people dead, city residents told Sputnik.
Motaz Agouri, an official at Benghazi security directorate's media office, said the explosion took place during Friday prayers inside the Saad Ibn Ibada mosque in Benghazi's busy Berka district.
Twin auto 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.
There was no immediate claim of responsibility.
Werfalli on Tuesday said he had handed himself in to military police under Haftar's command, but it was not possible to confirm his arrest from an independent source.
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The blasts follow twin vehicle bombings outside a mosque in Benghazi after prayers on January 24 that left almost 40 people dead. "Prompt, impartial investigations should bring perpetrators to justice".
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.
The LNA was battling extremists, including some linked to ISIS and al Qaeda, as well as other opponents until late past year in the Mediterranean port city.
In the past few months there have been occasional, smaller scale bombings apparently targeting LNA allies or supporters. The UN-backed unity government based in the capital has struggled to assert its authority outside western Libya.
It has since imposed strict military control on the city and other parts of eastern Libya under its control. The country has been since split between rival governments and militias.