Both the victims refused to give any statement on the day of the incident but approached the Vikaspuri police station the next day. They have been released from the hospital. "It's not a burn injury but there is a stain on the face due to the chemical," the police said.
Prima facie, it seems that the victim was in a relationship with the girl and the suspect was asking her not to meet him.
The doctor has opined 'chemical' in the MLC while the exact nature is not known so far.
Further investigation in the matter is underway.