A 68-year-old motorcyclist is in a critical condition following a collision with a car in Marsa at around noon.
The pillion rider, a 66-year-old Dutch woman who lives in St Julian's, was slightly injured.
The accident took place in Triq il-Haddiem, close to the former shipbuilding yard.
The police said the biker, who was riding a Peugeot LXR, collided with a Toyota Corsa that was being driven by a 28-year-old man from Zejtun. Two passengers were in the car.
An inquiry is being held.