Five youths went to the office of Kamrul Alam on the ground floor of a four-storey building at 2:45pm, gave a visiting card of local Jatiyatabadi Chhatra Dal leader Arif to office peons and sought Kamrul's permission to meet.

"After getting Kamrul's permission, the gang entered his office room and soon we heard seven or eight gunshots," Mohiuddin Sarkar, a director of the company said, adding, "As we rushed to the room, the criminals pointed firearms towards us and threatened to kill, prompting us to run for cover."

After that they walked away brandishing firearms, witnesses said.

The office staff rushed bullet-riddled body of Kamrul, 48, to Dhaka Medical College and Hospital (DMCH) where doctors declared him dead.

He received six bullets in the eyes, face, hands and neck.

Many AL leaders and activists rushed to the DMCH hearing the news.

Hailing from Sonagazi in Feni district, Kamrul was a member of the now defunct committee of Feni district AL and owner of Globe Link Container Lines Limited, Globe Link Air Cargo Services Limited and Chowdhury Trade Enterprise Private Limited.

Police are yet to find any clue to the "planned killing", Deputy Commissioner (South) of Dhaka Metropolitan Police Mazharul Hoque said, adding that descriptions of the killers do not match the person whose visiting card was given to Kamrul.

No one has been arrested in connection with the killing.