An investigation into a missing person who disappeared in late February is ongoing and heart-wrenching for his family, his mother said Friday.

“It’s honestly something you can’t describe,” Jill Williams said. “The heartbreak and the worry.”

Kristopher David Clarke, or “K.C.” as he was known to family and friends, was last seen on Feb. 22 and is a 29-year-old male, about 5 foot, 10 inches and 140 pounds with brown hair and eyes, according to a Williston Police Department press release. The police department is coordinating with the Bureau of Criminal Investigation in the search.

Williams, who lives in Washington where Clarke was also originally from, said her life hasn’t been the same in the past few months.

“I wonder where he is. I wonder what he went through. Even if he’s dead or alive,” she said. “It consumes my life. If I sleep at all, I dream about trying to find him.”

The search began when a friend of Clarke’s stopped hearing from him and a landlord for a rental house he had been paying for in Texas stopped receiving checks.

Williams said her son originally left for North Dakota to make some money and was working as a truck driver for Blackstone Trucking, eventually being sighted for the last time in New Town.

His truck was later found, but Clarke has not been located, she said.

Williams said she has struggled with how to search for Clarke but has created a Facebook page called “Find kc-gimpdaddy” where she posts updates.

“There’s no handbook that tells you what to do when your child goes missing,” she said.

Donations are also being collected through Paypal using the email address to help with a reward offering and with travel needs as Williams has gone to Texas and is planning a trip to North Dakota to collect his things, she said.

Overall, Williams said Clarke touched the lives of many people.

“He just cared about people and people loved him,” she said. “If he doesn’t come back, it’s a huge, huge loss just to humanity because everywhere he went he made a difference.”

Clarke also has scars, pins and plates from a motorcycle accident as well as injuries to his left wrist, abdomen and ribs along with the left side of his upper back, according to the police press release.

He has a slight limp. Contact BCI Special Agent Steve Gutknecht at 701-577-1212 or Crime Stoppers at 701-572-8477 with information about his whereabouts.