The security commissioner of the state of Morelos, just south of Mexico City, said the police officers involved in the raid are under investigation.
But security commissioner Alberto Capella said police had been careful in raid conducted today in which a suspected Jalisco cartel member and four associates were arrested after they surrendered.
Capella said four women, a young girl and a man were killed in the house. He said they were presumed relatives of the trafficker, who had allegedly involved in a previous shootout with officers.