UPDATE 2 p.m.- Police have released an update on the manhunt for John Williams, who is wanted in connection with the murder of Somerset County Sheriff's Deputy Eugene Cole.

Maine Department of Public Safety Spokesman Steve McCausland said Williams is still at large and anyone seeing him should call 911 immediately, he is armed and dangerous.

Police also released a series of photos taken from Cole's cruiser that show Williams at the Norridgewock Cumberland Farms after the shooting.

UPDATE - 12:05 p.m. According to News Center Maine, Madison High School is in lockdown and police have surrounded a home on Jones Street in Madison.

According to the Kennebec Journal, a deputy was shot and killed this morning (4-25) on U.S. Route 2 in Norridgewock.

In a a press conference, Somerset County Sherrif Dale Lancaster confirmed the deputy killed was Eugene Cole, 62.

The sheriff also named the suspect in the shooting, John Williams, 29, of Madison. Williams is suspected of shooting and killing Cole and then stealing Cole's police vehicle. Williams is described as 5-foot-6, 120 pounds with brown hair, blue eyes and a ponytail.

The initial incident was reported as a robbery at 1:41a at Cumberland Farms. The FBI is headed to the scene via aircraft and is expected to arrive around 9:45a. A briefing with the Sheriff's office is expected at 9:30am.

MSAD has closed the Millstream School, which is in the area of the incident, as a precaution.

News Center Maine has live footage from Norridgewock where police have surrounded a home with guns drawn.

Here is video from WABI of the sheriff's press conference earlier today.