Counter Terrorism and Transnational Unit of Dhaka Metropolitan Police (DMP) has handed over the DNA sample of six gunmen, who were killed in commando operation at Gulshan Holey Artisan Bakery standoff on July 2, to Federal Bureau of Investigation (FBI) of USA. Md Yusuf Ali, Deputy Commissioner of DMP Media and Public Relation division said Jagonews24.com, a team of Counter Terrorism and Transnational Unit handed over the DNA sample to FBI officials of six terrorists on Friday morning.Earlier, On July 1, the Holey Artisan Cafe and O’ Kitchen, an upscale cafe frequented by foreigners, came under attack on the evening, 20 diners, including 17 foreign nationals, were murdered before commandos stormed the restaurant and took out six gunmen in the next morning.