TROY, Mich. – Troy Police are investigating a deadly crash that happened on southbound I-75 north of 14 Mile Road south of E. Maple Road Sunday morning. Troy police were notified by Madison Heights police that a vehicle was traveling northbound in the southbound lanes of I-75 north of Twelve Mile Road. Troy officers responded to the area where a serious crash involving the wrong way driver and a second vehicle that had been southbound on I-75 took place. Southbound I-75 was closed for more than five hours to complete the investigation. Troy police say it is unknown if drugs or alcohol were contributing factors in the crash.