Unknown attackers exploded home-made bombs in a bid to take control of Benapole land port’s contracting job on Monday, leaving at least 20 workers and several pedestrians injured.

The import and export trade between the two countries, including unloading of goods, has been suspended due to this attack, witnesses said.

Port handling worker contractor Wahiduzzaman Wahid said a group of goons exploded a number of bombs in front of the port. At least 20 workers and were injured.

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Critically injured port worker Imran Hossain was admitted to a local hospital, he said.

“The men of ‘Rashed Bahini’ carried out the bomb attack on the port,” he alleged.

There has been a long dispute between two groups over controlling the port handling contracts.

Assistant Superintendent of Police (ASP) Jewel Imran of Navaran Police's "A" Circle said police brought the situation under control.

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“However, the primary investigation revealed that the attack was carried out under the leadership of Rashed Councillor,” said the official without providing details.

Police detained three people in this connection, he added.