A group affiliated to al-Qaeda later claimed responsibility for the killing.
The hacked activist had recently organised a 'rainbow rally' for the transgender community in Bangladesh.
4 May 2016
Bangladeshi radicals release a new hit-list
Bangladesh's secular image took another hit as a Bangladeshi extremist outfit has released a new hit-list naming 10 people, including the head of a university and ruling party officials.
Those on the list include Rajshahi University Vice-Chancellor M Mizanuddin and former mayor Khairuzzaman Liton.
Police said they were investigating the threat and that the 10 people had been provided additional security.
15 May 2016
Buddhist monk hacked to death in Bangladesh
A 70-year-old Buddhist monk was hacked to death inside a monastery in southeast Bangladesh.
Officials said, "the assailants slit his throat... it appears he was murdered sometime after the midnight when he was staying alone at the monastery."
Bangladeshi security officials stated that the killing bore the hallmark of previous murders of intellectuals, bloggers and minorities by Islamists in the country.
11 Jun 2016
Bangladesh police arrests 1,740 radicals in an anti militant drive
Bangladesh police detained another 140 radicals including some members of an outlawed militant outfit in a crackdown to stop the wave of brutal attacks on minorities and secular activists by Islamists.
With these arrests, the total number of arrests within this week to 1740.
Of the total 140 detainees, 88 are from Rajshahi district, 35 from Satkhira and 17 from Natore.