An 18-year-old man was stabbed and a 15-year-old girl was sprayed in the face with an aerosol during a mugging in Belfast city centre.
They were attacked by two youths in Music Hall Lane at about 2000 GMT on Wednesday.
The man was stabbed in the back several times. His injuries are not believed to be life-threatening.
The two attackers took a mobile phone from the pair during the incident.