Another blogger has been hacked to death in Bangladesh, the third such attack on freethinkers this year.

Ananta Bijoy Das, a blogger, was killed at Subid Bazar area in Sylhet city at 8:30 am local time, on Tuesday.

Das used to write for the Muktomona blog, a forum which was run by American-Bangladeshi blogger Avijit Roy, who was killed earlier this year.

Das was also the member of local Gonojagoron Moncho organising body, the Dhaka Tribune reported.

Four attackers stabbed him 'all over his body' and he died on the spot, according to The Daily Star.

The killing comes just two months after blogger Oyasiqur Rahman was hacked to death in Dhaka in March.

Avijit Roy's murder in February this year, wherein he was brutally hacked to death, sparked global outrage.

The Al Qaeda claimed responsibility for Roy's murder this month.

Roy, who lived in the United States and was visiting Bangladesh, was attacked on 26 February when he was walking with his wife, who was also left bloodied with a finger chopped off.