Did side effects of steroids contributed in decision of Cullen Mutrie to shoot police officers?

Law enforcement officials raided Cullen Mutrie’s house for a steroid investigation. This ma shot five police officers at his home. As a result, the Greenland Police Chief Michael Maloney was killed; other four police officers were wounded. The next morning Cullen Mutrie and a woman were found dead.
It is suspected that Mutrie was administering steroids at the time of the shootout. Jane Young, the New Hampshire Associate Attorney General, claimed that toxicology reports were waiting in order to learn whether metabolites of steroids were in the body of Cullen Mutrie.
Police officers reported that Cullen Mutrie had been a muscular person. This person worked at Genetix Fitness in Seabrook. It was described that he was 6 feet 3 inches tall. Cullen Mutrie weighed 275 pounds. During a search which was in July 2010 police officers found anabolic steroids at his home. The policeman Wayne Young found them in a coffee table. He said that he had saw a plastic bag with certain vials. One vial was with powder; others contained liquid. The labels indicated that they were steroids.
The vials were analyzed by the New Hampshire State Crime Lab. It was determined that the vials contained such medications, as Trenbolone Acetate, Sustanon 250, Boldenone Undecylenate and Nandrolone Decanoate.
John Miller, a professor of kinesiology, was asked whether a link between the criminal actions and aggressiveness due to anabolic steroids could present. The professor confirmed that it was plausible. But according to him, it is impossible to confirm that there was a direct connection between intake of anabolic steroids and the crime.
John Miller suggested that steroids that were on the black market were provided from legal pharmaceutical companies. But he has been mistaken because the majority of steroids which are sold on the black market are manufactured in underground labs. It is even suggested that Cullen Mutrie manufactured steroids.
Since a link between crimes and intake of steroids is a controversial issue, not only policemen but also media investigates the case connected with the cop-killer.