Oakland County Sheriff says no motive yet known in Rochester Hills splash zone shooting

(CBS DETROIT) – Oakland County Sheriff Michael Bouchard provided an update Monday afternoon on the investigation into the filming at Brooklands Plaza Splash Pad in Rochester Hills Saturday evening, leaving nine people injured.

Bouchard said Saturday night a gunman with no known criminal history opened fire at the Oakland County splash pad, injuring nine people, including two children. The victims, who were being treated in at least four area hospitals, ranged in age from 4 to 77 years old.

On Monday, Bouchard said two victims remained in critical condition. A 37-year-old woman and a 77-year-old man have been released from the hospital. The sheriff said a 39-year-old woman could be released later Monday.

Investigators seized a phone, a tablet, a MacBook Pro, two PC towers, four USB sticks and two external drives from the shooter's home. Bouchard said investigators looked at the phone but found nothing regarding a motive.

A Glock 9mm semi-automatic handgun and three empty magazines were recovered at the scene. Bouchard said Monday that 36 shell casings and 13 projectile fragments were recovered at the scene, as well as two additional magazines. The investigation suggests that the shooter had two handguns at the scene and left one at the scene. The gun left at the scene was registered to the shooter and legally purchased in 2015.

The suspect, Michael William Nash, 42, of Shelby Township, later committed suicide following a confrontation with police at his Shelby Township residence. His last known contact with police was a traffic stop in 2016.

Bouchard said police recovered a handgun at the scene and at least 11 firearms at the residence.

“Law enforcement and public safety need more mental health and peer resources within their agencies,” Bouchard said Monday. “In the last two years, the number of police deaths in the line of duty has exploded. And the number that has exceeded that number is the number of police officers who have committed suicide. So we need help. So everyone in Washington or Lansing is asking what they can do to help; this is what they can do. We could use the resources of peer-to-peer programs, mental health resources for the community, the co-responder programs that we use every day to try to save lives and get people into treatment… I can't talk about mental health enough.

Bouchard said the suspect's mother, with whom he lived, was overseas, that investigators had no further contact with her and that she had potentially retained a lawyer.