An explosion rocked Zawiya late on Monday, security sources from the city reported.
The blast occurred in Al-Qardabiya Street, near the HQ of the "Back-up Force" where Amer Al-Qajem, a senior leader of Haftar's militias, is being held.
The sources explained that the explosives were planted in a car, confirming that no human casualties were reported.
Pro-Haftar social media platforms circulated the news of the explosion as soon as it occurred.
The platforms confirmed that a sleeper cell belonging to Haftar was behind the operation, vowing that other operations are to come in response to the arrest of Al-Qajem who was captured by the Libyan army after his plane was shot down south of the city.