They said that he would have his television cameras arrive first on the scene to boost ratings of his crime programme "Canal Livre".
The programme showed Souza in a studio denouncing crime often with exclusive footage of arrests, crime scenes and drug seizures.
Souza's programme apparently aroused suspicion last year after a report showed the body of a suspected drug dealer burning in the woods long before the police arrived.
The television show host has denied the accusations claiming to be the "victim of a plot by organised crime."
In an interview with The Associated Press in August, he denied any role in the killings and said his reporters managed to get to crime scenes so quickly because of well-placed sources and monitoring scanners for police radio dispatches.
Souza, who was elected as a state representative in 2006, had remained free because of legislative immunity that prevents Brazilian legislators from arrest on most charges unless they are caught in the act.
But the legislative assembly in Manaus expelled him last week, stripping him of his parliamentary immunity and allowing the charges against him to proceed.