The suspect in UnitedHealthcare CEO Brian Thompson’s slaying was reported missing by his family last month after he lost touch with them following a recent back surgery, according to sources and reports.

Luigi Mangione, 26, was captured in Altoona, Pennsylvania, on Monday after he was spotted eating at a McDonald’s by an employee of the fast food restaurant who believed he resembled the gunman wanted over last week’s brazen shooting outside a Manhattan hotel.

Mangione — an Ivy League graduate from a prominent Maryland real estate family — was found carrying a ghost gun, masks and rambling writings linking him to the ambush, authorities said. As investigators continue to piece together a possible motive for the cold-blooded killing, it has since emerged that Mangione had lost touch with loved ones in the weeks leading up to the shooting.