Bangladeshi police arrested a student Sunday in the hacking death of a university professor a day earlier in Rajshahi city, authorities said.


Rezaul Karim Siddique, 58, taught English at Rajshahi University.
He was waiting for a bus to take him to campus Saturday when he was attacked from behind and stabbed in the neck, according to Sadhir Haider Chowdhury, a city police commissioner.
The professor died on the spot.
It’s unclear whether his attack was related to the recent hacking deaths of bloggers in the nation. An investigation is ongoing.
Police declined to provide details on the student or whether he had any ties to militants.
ISIS claims responsibility
ISIS claimed responsibility for the killing, according to Amaq, the terror group’s media agency.
“ISIS fighters assassinated a university professor for calling to atheism in the city of Rajshahi in Bangladesh,” a statement from the group said.
CNN cannot immediately confirm ISIS’ claim, nor its statement on the religious beliefs of the victim.
Earlier this month, Bangladesh Law and Justice Minister Anisul Huq told CNN that it was “safe to say that there is no existence of ISIS in this country.”
Huq also dismissed reports “about the claim of ISIS that they’re trying to make Bangladesh their base headquarter for operations in India, Bangladesh and Myanmar.”
“That’s their claim, one can claim anything,” he said.