Published: Sat, January 06, 2018
Research | By Raquel Erickson

Body Discovered After High Speed Chase Near Rapid City is Suspect's Mother

Roughly half of them remain unsolved.

What started as a routine traffic stop on Monday turned into a wild, high-speed chase for cops in South Dakota. An autopsy was conducted, but the results are pending.

It's unknown how Walsh died and if her son killed her.

He was arrested on charges of aggravated eluding and drunk driving, according to The Associated Press.

Jackley says state authorities are working with California officials on the death investigation.

Jackley's office says a state trooper on Monday observed Walsh-Lommen driving more than 100 miles per hour on I-90 in western South Dakota.

Lommen, whose last-known address was in the Escena Palm Springs development off Gene Autry Trail, was arrested after he tried to run from the scene.

Trooper Jeremy Biegert of the Pennington County Sheriff's Department said the suspect had an alcohol stench and had a blood alcohol level of 0.142, well above the legal limit. Prescription bottles and a growler that smelled of alcohol were found inside his vehicle.

According to a news release on Thursday from Attorney General Marty Jackley, the body of 58-year-old Michelle Walsh of Palm Springs, California, was found in the rear of the vehicle stopped on Interstate 90 after a chase from Spearfish led by Tosten David Walsh Lommen, 30, of Santa Cruz, California.

He's being held at the Pennington County Jail and the Pennington County Clerk of Courts office says Lommen's bond has been set at $2.5 million.

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