The 22-year-old victim, a resident of Barnala, was rushed to the DMC Hospital where her condition was stated to be stable, police said.
The boy aged about 25 years managed to escape on some vehicle parked outside the beauty parlour in the Sarabha Nagar locality, Commissioner of Police (CP), Ludhiana N S Dhillon said.
The CP said that based on the preliminary details provided by the victim's family the boy also belonged to Barnala. Dhillon said that the boy used to make threatening calls to the girl asking her to marry him or face consequences.
The boy is a brother of a friend of the victim; police said, adding that police parties had been sent to Barnala to nab the boy.