O'Fallon police officers were involved in a five-hour standoff Thursday with a 24-year-old suicidal man held up in a house in the 100 block of Elm Street.

O'Fallon Police Captain Mark Berry said the incident ended with the man, whose name was not released, surrendering to police at about 2:15 p.m. Thursday.

"He voluntarily gave himself up, and he was taken to a local hospital," Berry said. "We made sure he received the assistance he needed after he was taken into custody."

The stand-off began just before 9:30 a.m. Police received a call at 9:23 a.m. regarding a suspect who possibly was suicidal and armed with weapons in his residence.

"Initially, we were unable to make contact with him at the residence or by phone," Berry said.

Illinois State Police was called in to assist with the standoff. Elm Street was closed during the incident, and residents in neighboring homes were asked to stay inside as a precaution, according to Berry.

"Once we established a perimeter, we ensured everyone in the neighborhood was safe," Berry said.

Police continue to investigate.

Contact reporter Jamie Forsythe at 239-2562 or jforsythe1@bnd.com.