A Nigerian born man was taken into custody last week for allegedly killing missing University of Utah student Mackenzie Lueck, according to the Salt Lake City police. Ayoola Ajayi, 31, is charged with aggravated murder, aggravated kidnapping, obstruction of justice and desecration of a body, Salt Lake City Police Chief Mike Brown said at a news conference on Friday. Police in United States say Ayoola killed Mackenzie Lueck and then burned her body in his backyard.