smugglers and injured another when they attacked the border force with bombs at Sobhapur in Malda district in the wee hours today, police said.
The incident occurred when about 30 smugglers were trying to cross over to Bangladesh with cows and BSF jawans intercepted them at about 2.30 am.
As the smugglers lobbed bombs injuring one jawan, BSF fired at them killing two on the spot and injuring another, police said.
The rest managed to escape.