MEXICO CITY (AP) — A Mexican court issued arrest orders Thursday for six people in relation to the fire that killed 39 migrants at a detention facility this week in the border city of Ciudad Juarez, according to the federal prosecutor leading the investigation.

Sara Irene Herrerías said they include three officials from the National Immigration Institute, two private security guards contracted by the agency and the detained migrant accused of starting the fire. She said five of the six had already been arrested and would face charges of homicide and causing injuries.

At least 39 migrants died after apparently starting a fire inside a holding cell at the facility Monday night. Mor than two dozen others were injured. Federal Public Safety Secretary Rosa Icela Rodríguez said 27 migrants remained hospitalized, all of them in either serious or critical condition. One other migrant had been discharged, she said.Rodríguez also said the private security firm involved, which she identified as Grupo de Seguridad Privada CAMSA, had a federal contract to provide security at immigration facilities in 23 states. She said it would have its operating permit revoked and face a fine Forty-eight federal agents would take over security duties at migrant facilities in the state of Chihuahua, where the fire occurred, Rodríguez said.

A video from a security camera inside the Ciudad Juarez facility showed guards walking away when the fire started inside the cell holding migrants and not making any attempt to release them. It was not clear whether those guards had keys to the cell doors. On Wednesday, a complaint filed with federal investigators from the federal Attorney General’s Office accused the state's top immigration official of knowing about the fire but ordering that the migrants not be released.The complaint filed by lawyer Jorge Vázquez Campbell said retired Navy Rear Adm. Salvador González Guerrero, the Chihuahua state delegate for the National Immigration Institute, “gave the order by way of a phone call that under no circumstances should the migrants ‘housed’ inside the place where the fire started be released.”The agency did not immediately respond to a request for comment about the allegations nor to a request to speak with González.Campbell said he would not reveal his clients' identities for their protection, beyond saying they were connected to the case.Mexican authorities announced Wednesday that eight suspects who worked at the facility were under investigation, as well as the migrant accused of starting the fire. Herrerías said then that González was not one of the eight officials called in to give statements about the incident.Herrerías, the prosecutor, said Thursday that their investigation would include the entire chain of command for the immigration facility to determine what action omissions could be punishable.