A 43-year-old man from San Gwann is in a critical condition after he had to be extricated from a trailor that overturned in Garbaldi Street, Marsa.
The man, who was driving the trailer, got trapped and was helped out by Civil Protection personnel after the trailer overturned at around 11.30am.
The accident happened when he lost control and crashed into a barrier. The container the trailer was pulling got unhooked and crashed into a low wall.
The road was closed to traffic.
An inquiry is being held.