FLINT, MI - Investigators plan to execute multiple search warrants in an attempt to determine exactly what happened in the rock-throwing incident that resulted in the death of a 32-year-old Mt. Morris man.

Five teenagers from the Clio area are charged with second-degree murder and other charges after police believe they threw rocks and other items off the Dodge Road overpass Oct. 18 and onto Interstate 75 below.

One of the rocks smashed through the windshield of the van Kenneth A. White was riding in and fatally wounded him.

Genesee County Undersheriff Chris Swanson said detectives have already executed two search warrants and plan to execute four other search warrants this week.

Swanson made the comments before the Genesee County Board of County Commissioners meeting on Monday, Nov. 6.

He also said the suspects were tossing items off of bridges in Saginaw County in the Birch Run area prior to White's death.

"We have tracked that going through Saginaw County 911 that this has been a long-running game with these kids," Swanson said.

Just before 5:30 p.m. on Oct. 16, Saginaw County 911 received a call that a recliner was being thrown off of the Busch Road overpass onto I-75 near the 140-mile marker, police said.

Michigan State Police responded to the call after a witness told police a blue pickup truck was seen as a red loveseat or chair was being tossed onto the highway below, according to Spokesman Lt. Dave Kaiser.

When police got to the scene, they found the piece of furniture off to the side of the road. There were no injuries reported and no vehicles hit the item, Kaiser said.

The state police said information about the incident has been forwarded to the Genesee County's Sheriff's Office.

Swanson also said a sixth individual involved has not been charged.

Kyle Anger, 18; 16-year-olds Mark Sekelsky and Mikadyn Payne; along with 15-year-olds Alexzander Miller and Trevor Gray; are all charged with second-degree murder, conspiracy to commit second-degree murder, malicious destruction of property and other felony and misdemeanor charges in connection with White's death.

Last week, Genesee District Judge William H. Crawford approved motions for competency evaluations for Anger, Sekelsky and Gray.

Anger is being held in the Genesee County Jail, while the other teens are being held at the Genesee Valley Regional Center for juveniles.

Crawford has denied bail for all of the Clio-area residents charged in White's death.

All face the possibility of up to life in prison.

More than a dozen rocks were allegedly thrown off the Dodge Road Oct. 18 overpass onto southbound I-75 and struck multiple vehicles, including the van White was traveling in. The rock that struck that vehicle punctured the windshield and led to his death, authorities say.

The rocks, one weighing 20 pounds, were gathered from a dead-end street in Vienna Township and put in the bed of a pickup truck, police previously said.

All five are scheduled to be back in court at 8:30 a.m. on Jan. 11.