An Indiana man accused of murdering one woman may have killed at least six more, hiding their bodies in abandoned houses, police said. Authorities now believe there could be even more victims, and spent Tuesday searching more than 90 dilapidated, empty buildings using a cadaver dog. Though officers aren't currently calling suspect Darren Deon Vann, 43, a serial killer, Hammond Police Chief John Doughty told CNN that Vann has been charged in at least one murder while investigators work to connect him to other murders in the area. Police were called to a Motel 6 in Gary, Indiana, Friday night when acquaintances of 19-year-old Afrikka Hardy found her naked corpse in a bath tub, according to a probable cause affidavit.