>>> MICHIGAN AUTHORITIES IDENTIFY THE MAN WHO OPENED FIRE AT THE SPLASH PAD IN A DETROIT SUBURB LAST NIGHT, 42-YEAR-OLD, MICHAEL WILLIAM NASH RELEASED 28 ROUNDS ON FAMILIES BEFORE TAKING HIS OWN LIFE. HIS MOTIVES REMAIN UNKNOWN. WE HAVE MORE ON HOW THE COMMUNITY IS RESPONDING. CHARLIE? >> Reporter: THE SHERIFF'S DEPARTMENT IN OAKLAND COUNTY, MICHIGAN SAID THIS SPLASH PAD WAS FILLED WITH FAMILIES WHEN A GUNMAN GOT OUT OF HIS CAR AND FIRED AT LEAST 28 TIMES, THEY ARE CALLING THIS SHOOTING RANDOM. A CHAOTIC SCENE AT THE SPLASH PAD IN ROCHESTER HILLS, MICHIGAN JUST AFTER 5:30 SATURDAY, 42-YEAR-OLD MICHAEL WILLIAM NASH EXITED THE CAR AND SHOT NEARLY 30 TIMES AT RANDOM, NINE PEOPLE WERE WOUNDED. THE VICTIMS INCLUDE A 78-YEAR-OLD MAN AND THREE MEMBERS OF THE SAME FAMILY, AN EIGHT-YEAR-OLD BOY, HIS FOUR-YEAR-OLD BROTHER AND 39-YEAR-OLD MOTHER. THREE MAGAZINES WERE RECOVERED AT THE SCENE, SHERIFF'S DEPUTIES SAY THE SHOOTER KILLED HIMSELF INSIDE HIS HOME HOURS AFTER THEY HAD HIM SURROUNDED. >> THERE WERE 100 PEOPLE FROM THE SHERIFF'S DEPARTMENT, THE FIRE DEPARTMENT, PARKS AND REC, JUST TO SUPPORT THE SITUATION AND THE RESIDENCE. THERE IS ANGER THAT SOME INDIVIDUAL WOULD CHOOSE YOUR CITY AND YOUR SPLASH PAD TO CARRY OUT THIS ACT, AND THERE'S MOSTLY JUST CARE AND CONCERN. >> Reporter: THE SHERIFF'S DEPARTMENT SAID THE GUNMAN HAD A HISTORY OF MENTAL HEALTH CHALLENGES AND AFTER TALKING WITH THE MAYOR IN ROCHESTER HILLS, HE SAID HE HEARD FROM THE WHITE HOUSE, HE ALSO HEARD FROM FORMER CHICAGO MAYOR, LORI LIGHTFOOT WHO EXTENDED HER CONDOLENCES AND SUPPORT. >>> THANK YOU. AS FOR THE CONDITION OF THE THREE FAMILY MEMBERS HIT, THE EIGHT-YEAR-OLD BOY IS IN CRITICAL CO