WATCH LIVE: CBS2 reporters are at the scene of a possible active shooter situation at the Trader Joe's near Hyperion and Rowena in Silver Lake.
Police confirmed the man barricaded himself inside the supermarket after leading police on a chase and crashing his Toyota Camry into a pole outside the store.
The suspect apparently crashed his vehicle into the store, opened fire at the officers following him, the rushed inside the store.
The incident started around 3:30 p.m. local time (4:30 p.m. Mountain Time) and prompted a major police response.
BREAKING, refresh for updates: Police have surrounded a Trader Joe's market in Silver Lake after a car-theft suspect crashed the vehicle after a pursuit and fled into the market. Police did not confirm if the suspect is armed or if there are hostages inside the store, located in the 2700 block of Hyperion Avenue.
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About four to six people climbed out of the store window.
Los Angeles Fire Department spokeswoman Margaret Stewart said a 20-year-old female patient was transferred to a hospital in fair condition.
Photos posted on social media show a auto crashed outside the store entrance as heavily armed police swarm the area.
It was unclear how many hostages remained in the store or if any shoppers or employees were hurt, but TV footage showed police tending to one person who appeared to be injured.
The story is still developing.