What happened to Michael Carson in Mirrors?

In the film "Mirrors," Michael Carson, played by Kiefer Sutherland, is a former police officer who takes a job as a night security guard at an abandoned department store. He soon discovers that the mirrors in the store are haunted by a malevolent entity that reveals dark secrets and unleashes horrifying events. As he investigates further, Michael becomes entangled in a series of supernatural occurrences that threaten not only his life but also the safety of his family. Ultimately, he must confront the entity and unravel the mystery behind its sinister presence.