YOUNGSTOWN — A man who killed a woman and her son in a drunken driving crash in March has pleaded guilty and may serve more than 20 years in prison.

Walter Bolt, 65, of Harvey Street in Struthers, pleaded guilty Monday before Mahoning County Common Pleas Court Judge R. Scott Krichbaum to two counts of aggravated vehicular homicide, second-degree felonies, one count of aggravated vehicular assault, a third-degree felony, and one count of OVI, a first-degree misdemeanor.

A news release from the Mahoning County Prosecutor’s Office states that, as part of the agreement, Bolt’s driver’s license is permanently revoked. The release also states that the prosecutor’s office will recommend a sentence of 19 to 23 years in prison.

“We are committed to holding impaired drivers accountable and ensuring justice for victims,” Mahoning County Prosecutor Lynn Maro said.

On March 3, Bolt’s Chevrolet Colorado was heading south on state Route 170 in Springfield Township, and Angela Brown’s Honda Accord was going north, when Bolt went left of center and struck Brown’s car near Unity Road and overturned it, causing her Honda to come to rest in the ditch on the east side of the road. The Colorado came to a stop partially off the road.

Brown, 44, of New Middletown, and her 15-year-old son, Jason Daff, were killed in the crash.

Her 12-year-old son, Jayden Daff, survived the crash but suffered serious injuries, for which he spent weeks in the hospital and from which he is still recovering.

The Ohio State Highway Patrol, which investigated the crash, stated that Bolt also sustained serious injuries and has shown up for court appearances in a wheelchair. A test showed that Bolt had a blood-alcohol level of 0.215, more than twice Ohio’s legal limit of 0.08.

Bolt was indicted by a Mahoning County grand jury in May on the charges he pleaded to on Monday, but on June 12 the grand jury issued a superseding indictment that added two more OVI counts. Those were dropped as part of the plea agreement, Maro said.

The news release stated that Maro offered her thanks to Springfield Township Police Department and the patrol “for their hard work on this case leading to a successful prosecution.”

Court records show that attorneys in the case were due for a pretrial evidence suppression hearing Monday morning, just before Bolt’s trial was set to begin. A presentencing investigation will be completed before Bolt’s sentencing hearing, which is scheduled for Sept. 16.