Ananta Bijoy Das died instantly after the gang of masked men attacked him with machetes near his house at Subidbazar area in Sylhet city this morning while he was on the way to his office, police said.
"Four armed assailants attacked him when he was going to the town in a rickshaw," Airport Police Station Officer in charge Gausul Hossain said.
"They (killers) attacked him from behind...He was hit with machetes on the head and died instantly," an eyewitness told PTI.
Machete-wielding assailants in February killed 45-year old Roy, a Bangladeshi-born US national, here while his wife narrowly escaped the attack.
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The murder of Das comes just a week after Al-Qaeda in Indian Subcontinent (AQIS) claimed responsibility for the deadly attack on Roy. Authorities have launched an investigation into the attacks on the bloggers.
Bangladesh is officially a secular country but 90 per cent of its 160 million population are Muslims.
Police so far arrested several activists of little known outfit Ansarullah Bangla Team as it earlier carried out a hate campaign on the internet against "atheist bloggers".
Investigators earlier said they suspected that the outfit was closely linked to al-Qaeda.
The US Federal Bureau of Investigation last month joined hands with Bangladeshi investigators in tracking down the culprits of Roy's murder while police shared the evidence linked to the assassination.
Blogger Rajib Haidar was the first victim of the suspected Islamists who killed him in 2013 here.