UPDATE 6/21/12 10:15 a.m. ALLENDALE TWP., Mich. (WZZM) - The Ottawa County Sheriff's Office says the man responsible for building and launching rockets in Allendale Township, came forward Wednesday night.

The 26-year-old man called Ottawa County Central Dispatch. He told them that he heard media accounts about the rockets, and he was calling to say he was behind them.

Detectives eventually spoke with the Allendale man. He told them he wasn't aware there were regulations covering the rockets. They called the man cooperative.

The case will be sent to the Ottawa County Prosecutors Office to determine if the man will face any charges.

ALLENDALE TWP., Mich. (WZZM) - The Ottawa County Sheriff's Department is trying to figure out who launched two high-powered homemade rockets in the past three weeks.

Karri Rozema and her family found a rocket smoldering behind their home in Allendale. At around 7pm, June 9th, the rocket landed in their back-yard. "I looked out and saw the smoke." The rocket was embedded into the ground. "It could have hit a building, person, could have gone anywhere."

The Rozema's called the Ottawa County Sheriff's Department. Lt. Mark Bennett says it was their second complaint. Both of the rockets had parachutes that did not deploy and were not the type of devices you could buy in a store. "This was a homemade rocket. High powered, PVC pipe up to 2 to 3 inches thick, about 8 feet in length. It could travel several hundred feet into the air."

There are clubs that launch similar type rockets, but they're shot-off in specified areas. And the Federal Aviation Administration is made aware of the clubs' launch plans.

Lt. Bennett says, "They were in suburban residential areas. Sparsely populated, but residential." Fortunately, in both cases, no one was hurt.

The Ottawa County Sheriff's Department is looking for anyone with information. You can call Silent Observer at 1-877-88-SILENT.

By Sarah Sell