The North African branch of al-Qaeda has blamed Lebanese group Hezbollah for the deadly bombings in the city of Tripoli, according to the US-based SITE monitoring service.
AQIM, al-Qaeda's north African branch, said in a tweet that it knew “with certainty” that Hezbollah was responsible for the twin blasts that have killed at least 42 people.
It added: "That vile party... should know that it will meet retribution soon.”
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A woman hit by police gunfire during a counter-terrorism operation has been arrested after being released from hospital.
Police have been granted extra time to question a man who is being held on suspicion of planning a terror attack.
The man opened fire at the house, shattering the front door and window.