An 18-year-old was grievously injured during an argument in Gzira last night.
The case happened at around 11.30pm in Triq ix-Xatt, Gzira.
The argument broke out between the teenager who lives in Senglea and another man, 26, who lives in Msida. A knife was allegedly used in the argument.
The teenager went to the Floriana health clinic where he was certified to have sustained grievous injuries.
The 26-year-old is being held by the Police for questioning as Police investigations into the matter continue.