Dhaka: The deaths of five militants and one chef during a commando operation at Gulshan’s Holey Artisan Café after a 12-hour hostage crisis on 2 July in 2016 were caused by bullets and splinters, said a forensic report on Saturday.

Dr Sohel Mahmud, head of the Forensic Department of Dhaka Medical College and Hospital (DMCH), handed over the report to police around 1:40pm.

They found no existence of energy boosting medicine or drugs in the militants’ blood, he said.

The five militants are Meer Samih Mobassher, Rohan Ibn Imtiaz, Nirbras Islam, Khairul Islam Payel and Shafiqul Islam Uzzal, and the chef is Saiful Islam Choukidar.

Twenty hostages — nine Italians, seven Japanese, one Indian, one Bangladeshi-born American and two Bangladeshis —were killed in the July-1 terror attack on the Gulshan restaurant.

Besides, two senior police officers — DB assistant commissioner Robiul Islam and Banani Police Station officer-in-charge Salauddin Ahmed Khan — were killed as they tried to rescue the hostages.

All the five gunmen who attacked the café and the chef were killed during a commando operation the next morning through which the hostage crisis came to an end.

Police later described the slain five militants as operatives of the banned militant outfit Jama’atul Mujahideen Bangladesh.