York Region police have upgraded charges against an Aurora man following a fatal collision Dec. 25 in Vaughan.

Police say the collision occurred shortly before 11 p.m., when the driver of a black Toyota Sequoia struck a grey Hyundai Santa Fe at Major Mackenzie Drive West and Fossil Hill Road.

The collision sent three occupants of the Santa Fe to hospital with what were initially considered serious, but non-life-threatening injuries.

However, a 68-year-old woman from Brampton died Jan. 23 after her injuries worsened in hospital.

The Toyota driver was arrested at the time and impaired driving and several related charges were laid. He was also charged with fail to stop at a red light and dangerous operation of a vehicle.

Gianmarco Di Luciano, 36, now faces a charge of impaired driving causing death.

The accused is scheduled for a court appearance Tuesday in Newmarket.

York Region police asks anyone with information to contact the Major Collision Investigation Unit by calling 1-866-876-5423, ext. 7704, or Crime Stoppers anonymously at 1-800-222-TIPS, or by leaving an anonymous tip online at www.1800222tips.com.