Police converge on Pepper Road and Commercial Avenue in Lake Barrington amid an active search for a homicide suspect, identified as 38-year-old Osceola Little, who was believed to be armed, after he was located held up in a building Tuesday evening. | Left: Provided Photo; Right: Photo Submitted to Lake and McHenry County Scanner

The sheriff says negotiations are underway with a homicide suspect who was located Tuesday evening barricaded in a building in Lake Barrington following an hours-long manhunt.

The Lake County Sheriff’s Office announced early Tuesday afternoon that they and other law enforcement agencies were actively searching for 38-year-old Osceola Little.

Little was described as being 5-foot-10 and approximately 165 pounds. He was reported to be wearing a white cutoff t-shirt.

A heavy police presence was seen near Route 14 and Pepper Road in Lake Barrington amid an active search for a homicide suspect who was believed to be armed and on foot in the area Tuesday afternoon. | Photo Submitted to Lake and McHenry County Scanner

A police manhunt began around 12:40 p.m. Tuesday in the area of Route 14 and Pepper Road in Barrington.

Officials said Little fled on foot from the Chicago Police Department at Swiss Automation, 1020 West Northwest Highway in Barrington.

Little was believed to be the driver of a newer-model dark blue Chevrolet pickup truck, which was located in an entrance road to Swiss Automation.

A female subject was taken into custody Tuesday afternoon at the Speedway gas station amid an active manhunt search for a homicide suspect on Route 14 between Kelsey Road and Pepper Road in Lake Barrington. | Photo Submitted to Lake and McHenry County Scanner

A female subject who was believed to be a passenger in the truck also fled from the vehicle before being taken into custody around 2:10 p.m. at the nearby Speedway gas station. A gun was recovered from inside the gas station restroom.

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Investigators had been tracking the Chevrolet pickup truck in connection with a homicide in Chicago that occurred in the past day, according to sources and police radio traffic.

The vehicle had fled from police Tuesday morning in a western Chicago suburb.

A heavy police presence was seen near Route 14 and Pepper Road in Lake Barrington amid an active search for a homicide suspect who was believed to be armed and on foot in the area Tuesday afternoon. | Photo Submitted to Lake and McHenry County Scanner

The Chevrolet was tracked to the Barrington area and fled from Barrington police officers.

It was reportedly involved in a hit-and-run crash near Route 14 and Pepper Road before being located nearby at Swiss Automation.

The sheriff’s office said Little was reported to be armed and dangerous.

Police canines and drones from numerous agencies were called in to assist with the search.

A heavy police presence was seen near Route 14 and Pepper Road in Lake Barrington amid an active search for a homicide suspect who is believed to be armed and on foot in the area Tuesday afternoon. | Photo Submitted to Lake and McHenry County Scanner

The Barrington High School, along with other District 220 schools, were placed on soft lockdown due to the incident.

People were asked to avoid the area of Pepper Road north of Route 14 to Kelsey Road.

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People were also warned not to approach Little if they saw him and instead call 911.

Lake County Sheriff’s Office Deputy Chief Christopher Covelli said in an update around 7:30 p.m. that officers had located Little held up in a building near Pepper Road and Commercial Avenue.

Negotiations are underway with Little, Covelli added.