A 66-year-old man from Zebbug was found lying on the ground with visible injuries on his face in Triq Mikelang Sapiano, Zebbug early this morning.
The police said the man, found at around 5am, has been hospitalised but his condition is not yet known.
Preliminary police investigations show that the man was riding a sulky when he was hit by a vehicle which allegedly drove off.
A man is being held for questioning.