Two men are in hospital after the vehicles they were in were involved in a crash, the police said.
The accident took place in Mdina Road, Attard, on Sunday at 12.45pm.
It involved a Mercedes Benz E220 driven by a 23-year-old man of Sliema, and a tractor Massey Ferguson, driven by a 55-year-old man of Rabat.
The tractor driver was grievously hurt while the other driver was slightly injured.