Twin car-bombs rocked the Iraqi city of Fallujah on Monday, killing at least 30 people and injured 30 others in the first attack on the city since Iraqi forces took over the town from the Islamic State group in June.
IS claimed responsibility for the attack on the Sunni-majority city, sparking rumours of collusion with Iraqi security agents.
The mayor of Fallujah, Issa al-Sayer, told The New Arab that the attack highlighted a major security breach which must be investigated in full.
There are also rumours of collusion on the part of security officials in the city which are currently being investigated.
Fallujah was the epicentre of Sunni militancy during the Iraq war, with extremist fighters unleashing a wave of attacks on Shia areas. Many members of the Iraqi military are believed to have links to Shia militia groups.