Update (June 1, 2018): Court documents obtained by CTV News show the charge against Albert Opoku has been withdrawn. 

Police say a man in his 50s is in hospital in life-threatening condition after a serious collision in Rexdale.

A transport truck and a dump truck were involved in the collision, which occurred near Highway 27 and Rexdale Boulevard overnight.

Police say northbound Highway 27 will be closed south of Rexdale Boulevard until about 6 a.m. as officers investigate the crash.

One southbound lane is also closed.

The circumstances that led up to the collision are not clear and police are asking any possible witnesses to come forward.

This is the second collision in the area in the last 24 hours.

On Tuesday, a multi-vehicle crash involving a dump truck near Humber College Boulevard and Highway 27 left one person dead and three others injured.

Police say 21-year-old Albert Opoku, of Oakville, has now been charged with dangerous operation of a motor vehicle causing death in connection with that crash.