"The girl's father Anil Kumar, her brother Lokesh and uncle Rajveer sustained injuries in the attack last evening," a police official said, adding the couple managed to flee again.
A police team along with the father and brother of the girl, a college student, had come to Poonch to take home their daughter who had eloped with one Gagandeep Singh from Delhi, he said.
When the police team and the girl's family members were on their way back, a group of boys attacked them near Digiana area in Jammu with sharp edged weapons and managed to help the girl and the youth flee, he said.
A case has been registered against the unidentified assailants and investigation is underway, police added.