A Bangladeshi man was allegedly killed and another was injured in firing by the Indian Border Security Force (BSF) at the Belbaridanga border in Patgram upazila of Lalmonirhat around midnight on Saturday.
The deceased was Rabiul Islam, son of Chenu Mia of Burimari union of the district.
Meanwhile, Shahidul Islam of the same area was shot in the left leg.
Quoting the family of the deceased, Patgram police station Officer-in-Charge (OC) Omar Farooq said a BSF patrol team in Cooch Behar opened fire at some Bangladeshis while they were trying to smuggle Indian cows into the country.
Rabiul died on the spot and Shahidul was injured while the others managed to flee the area.
Shahidul is undergoing treatment at a hospital in Rangpur, said the OC.
Rabiul's body was sent to the morgue of a Lalmonirhat hospital after an autopsy, he added.
Teesta Battalion-2 (BGB-61) Director Lt Col AM Mahbubul Alam Khan could not be reached for comment.
Meanwhile, BGB-61 Shamshernagar Company Commander Belal Hossain said he had heard about the incident.