UPDATE 5:16 p.m. — Caltrans says Highway 50 is now back open in both directions.

UPDATE 5:01 p.m. — Police tell CBS13’s Shirin Rajaee the suspect is now in police custody. There is still no word yet as to when Highway 50 will be reopened.

UPDATE 4:59 p.m. — SWAT vehicles are now leaving the scene. The Ford Mustang is still on the scene.

UPDATE 4:22 p.m. — SWAT and multiple armored vehicles have arrived at the scene.

UPDATE 4:12 p.m. —

UPDATE 4:02 p.m. — We are getting our first video from the scene.

UPDATE 3:28 p.m. — We have a crew on the scene. The red Ford Mustang is the car police have stopped.

UPDATE 3:22 p.m. — Sacramento Police say this started at 1:20 p.m. with a call of a person armed with a firearm at Norwood near I-80.

UPDATE 3:14 p.m. —

TRAFFIC ALERT: Avoid Highway 50 in Sacramento between Watt eastbound and Bradshaw westbound. Highway closed due to police activity. No ETO. ⁦@CHP_HQ⁩ ⁦@CHP_Valley⁩ pic.twitter.com/ASqls04yYq — Caltrans District 3 (@CaltransDist3) May 12, 2019

UPDATE 2:50 p.m. — CBS13 has learned this began as a chase involving the Sacramento Police Department.

SACRAMENTO (CBS13) — CHP says all traffic is being diverted off of eastbound Highway 50 at Watt and westbound on Highway 50 at Bradshaw for a traffic stop.

It is unknown when the highway will reopen.

This is a breaking news story. We will update it when we get new information.