Early Wednesday morning Troopers from the Michigan State Police responded to East Bacon road at Tripp Road in Hillsdale County for a serious injury crash.  A vehicle traveling West on Bacon Road lost control, went off the road and struck a tree.  The driver, a 44 year old Hillsdale man, was critically injured and was flown from the scene to U of M Hospital.  The two passengers, a 21 year old man and a 43 year old man both from Hillsdale were pronounced dead at the scene.  Their names are being withheld at this time.  The investigation is continuing but early indications are that alcohol and speed contributed to the crash.