Update as of 4:40 p.m. Oct. 27, 2011

Northbound Interstate 5 has opened, but southbound traffic continues to be rerouted at Highway 89 as the investigation of an officer involved shooting continues, the California Highway Patrol's Mount Shasta Area reported.

The shooting occurred in the Soda Creek area of Shasta County, at the termination of a pursuit that originated in Oregon, according to the CHP.

As called for by Shasta County's Officer Involved Shooting Protocol, a combined agency team is investigating the incident, the press release states. That team includes the Redding Police Department, Shasta County Sheriff's Department, Office of the Shasta County District Attorney, and CHP.

It is anticipated that southbound I-5 will remain closed until 7:30 p.m., and perhaps beyond.

Initial story:

Frustrated travellers are being directed off of Interstate 5 this afternoon after a “critical incident” near the Soda Creek area shut the freeway down.

Southbound traffic will be closed until 7 p.m. or later. Northbound traffic may be opened within the next hour, according to a press release from the California Highway Patrol.

Southbound traffic is being rerouted along Highway 89 down to Highway 299, a minimum two-hour detour.

Small, curvy back roads like Azalea Road between Mount Shasta and Dunsmuir became a regular thoroughfare, and little-used offramps were clogged with traffic this afternoon as confused travellers try their best to arrive at their destination.

The Record Searchlight in Redding is reporting on its website that Shasta County sheriff's deputies and CHP officers shot a man who may have been suicidal at least three times near Castle Crags State Park at approximately 12:30 p.m.

The Shasta County Sheriff’s office said a K-9 was shot and rushed to the vet after the altercation.