On May 26, 2016, a suspect, Sigfredo Garcia, 34, of Miami Beach, was arrested for first-degree murder based on a warrant issued by a Leon County judge. Tallahassee police would not release further details, but told reporters that the killing was being investigated as a murder for hire and sources said that they expected more arrests in the case. A few days later, a judge in Leon County Court ordered the probable cause affidavit behind the arrest unsealed. The affidavit revealed investigators' belief that Garcia and Luis Rivera, 33, had traveled from the Miami area in a rented Toyota Prius, staying in motels the nights of July 16 and 17, 2014, to commit the crime. Evidence included cellular phone, banking and SunPass electronic toll collection records; security camera footage from buildings and city buses along the streets Markel and the alleged killers had driven, and the testimony of an unnamed informant along with a nearby witness. The morning of the killing, they had trailed Markel as he ran errands and went to the gym, until they could shoot him at his home.