UPDATED: December 17 at 7:15 p.m.
A rural Ralls County man is in custody after an alleged sexual assault led to a lockdown of Monroe City schools Tuesday morning.
According to a release from the Missouri State Highway Patrol, 38-year-old Jack Jason Greathouse of rural Ralls County was arrested Tuesday afternoon after a brief standoff with authorities. He was arrested on charges of sexual assault and assault.
Greathouse was taken to the Marion County Jail.
At approximately 9:20 a.m. Tuesday, the Ralls County Sheriff's Department requested the assistance of the Missouri State Highway Patrol in locating Greathouse. He was suspected of sexually assaulting a 36-year-old female earlier in the day.
Monroe City schools were placed on lockdown around 10:30 a.m. after Greathouse allegedly threatened to take his children from the schools.
At 11:50 a.m. a search for Greathouse began. A Missouri State Highway Patrol aircraft located the suspect's pickup truck in a field southeast of Monroe City.
Shortly after, officers made contact with Greathouse who was taken into custody without incident after a brief standoff.
ORIGINAL STORY: December 17 at 12:12 p.m.
All schools in the Monroe City School District are currently on lockdown, according to high school superintendent Jim Masters.
The lockdown started about 10:30 a.m. Tuesday. A man, whose identity has not been released by police, assaulted his wife and made a threat that he would take his children from the schools.
"As a precaution, we have locked our buildings down," Masters said. "We have law enforcement posted inside and outside the buildings."
The lockdown includes all buildings including the high school and elementary school.
"Until we hear that he's in custody and that the threat no long exists, we will not let anyone in or out of the buildings," Masters said.
Sgt. Brent Bernhardt of the Missouri Highway Patrol said his agency was called about 9:20 a.m. to assist the Ralls County Sheriff's Office in the assault investigation.
Bernhardt could not release the identity of the wanted man. He said it's believed he's currently in the southeast rural area of Monroe City.