Calgary City Police have a possible impaired driver in custody after a two car collision sent three people to hospital on Deerfoot Trail early Sunday morning,

The two-car crash happened on Deerfoot Trail at 5:15 A.M. Sunday March 5 that sent three people to the hospital, two in critical condition.

One person, who was examined by EMS and released, has been taken to a district office for alcohol testing.

Det. Andy Nquyen says the traffic division will be investigating.

The Northbound highway between 64th Ave. and Beddington Trail reopened just before 11 a.m.