Officers responded to the 2500 block of Dusan Street around 8:15 a.m. on July 21 for a call about a domestic disturbance and assault, according to the Simi Valley Police Department.
Police learned the suspect in the incident, 37-year-old Simi Valley resident Nicholas Thompson, fled the location before officers arrived.
After a preliminary investigation, police determined there was probable cause to arrest the man for domestic battery and elder abuse. Officers documented a bloody injury on the arm of Thompson's father.
Body camera footage shows family members telling police that Thompson was armed and, before fleeing the residence, allegedly threatened to commit "suicide by cop."
"So he said that he would go on a rampage, he can have a shootout with you guys, and then if you were to shoot him, he won't go to hell," one family member told officers.
A few hours later, at approximately 1:35 p.m., officers spotted the suspect driving near the Simi Valley Town Center. They attempted to stop him, but the suspect took off, sparking a chase, according to police.
"Those officers tried to make a traffic stop on that car, but the suspect fled and led the officers in a short pursuit that ultimately ended up back over here in this neighborhood," a police spokesman said.
Man shot and killed by Simi Valley police after chase ends in crash
An officer's body camera video shows him giving the family a dire warning: "Hey, it's the police department. Make sure to lock yourself inside, inside the bathroom. Go to the bathroom and lock the door."
The chase ended in a crash back near the 2500 block of Dusan Street, where an officer-involved shooting occurred, the department said. Thompson was pronounced dead at the scene, and no officers were injured.
In a video from a witness in the neighborhood, a barrage of gunfire can be heard as police units speed down the street, past witnesses, and arrive at the crash scene. Officers were seen firing numerous rounds at the pickup truck.
Another video obtained by Eyewitness News shows the pickup truck speeding down the road right before the violent crash into an unoccupied police motorcycle. Police officers, who were right behind the vehicle, then jump out of their patrol units and aim their guns at the pickup truck, firing shots.