Kerry calls Sheikh Hasina, offers FBI assistance

US Secretary of State John Kerry called Bangladesh Prime Minister Sheikh Hasina and offered her assistance from American law enforcement agencies, including FBI, in the wake of the terror attack on a Dhaka restaurant in which 20 hostages were hacked to death.

"The Secretary encouraged the government of Bangladesh to conduct its investigation in accordance with the highest international standards and offered immediate assistance from US law enforcement, including the FBI," State Department spokesperson John Kirby said.

Kerry called Hasina yesterday to offer support in the wake of the "outrageous attack" on the Holey Artisan restaurant in Dhaka's high-security diplomatic zone, he said.

During the call, Kerry condoled the loss of lives at the hands of terrorists "who threaten the US, Bangladesh, and the international community".

"He re-affirmed US support for Bangladesh's efforts to bring those responsible for planning and conducting the attacks to justice as well as to prevent future attacks," Kirby said.

Twenty hostages, including Indian girl Tarushi Jain, were hacked to death by terrorists inside the cafe popular with expats in the diplomatic zone before commandos launched an assault, killing six attackers and capturing one alive.

Most of those killed were found with their throats slit. Islamic State group claimed responsibility for the attack through its Amaq news agency, nearly four hours after the hostage crisis unfolded.

Bangladesh, however, blamed "homegrown" Islamist terrorists and Pakistan's spy agency ISI for the attack, ruling out involvement of the Islamic State.