According to BSF Inspector General (Punjab Frontier) Ajay Tomar, the three intruders had last night crossed over into Indian territory when they were challenged by a BSF patrol near the Indo-Pak border at Mullapur village.
Asked to surrender, the intruders responded by opening fire, prompting the BSF personnel to retaliate, killing the trio.
A massive search operation was launched in the morning near the border area during which the bodies of the trio were found with bullet injuries.
The dead intruders are estimated to have been aged between 25 and 30 years.