Two men had to be rushed to Mater Dei on Saturday afternoon after a car crash on Valletta Road, Żurrieq.
A third man, a 19-year-old from Żabbar was behind the wheel of one of the two vehicles involved in the accident but was unharmed.
In a statement, the police said the accident occured at around 3.30pm.
The 19-year-old was driving a BMW 318 while a 35-year-old man from Naxxar was behind the wheel of Toyota Vitz. A 65-year-old man from Kirkop was a passenger in the Toyota.
According to the police, the two men in the Toyota had to be rushed to Mater Dei, with the 65-year-old later being certified as suffering grievous injuries.
The Civil Protection Department and a medical team were on site to assist.
Magistrate Marse-Ann Farrugia is leading an inquiry into the accident as police investigations continue.