UPDATE (8:46 p.m.) - The Arroyo Grande Police Department has confirmed the suspect is dead.
The department has not released further details at this time.
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UPDATE (5:49 p.m.) - At least one person was killed in a shooting at a senior apartment complex in Arroyo Grande on Wednesday afternoon.
According to the Arroyo Grande Police Department, someone called 911 at about 3:05 p.m. to report hearing 3-5 gunshots coming from the apartment manager's office at the Cortina d'Arroyo Grande Senior Apartments on Courtland Street.
When officers arrived at the scene they found a deceased person in the office with at least one gunshot wound.
The suspect has been identified as a resident of the apartment complex.
Police say crisis negotiators were on the phone with the suspect for some time, but he has since ended the call and is no longer answering.
The SWAT team has entered the building to try to make contact with him again.
Some parts of the apartment complex have been evacuated while other areas have been told to shelter in place.
Police say a motive for the shooting is unknown at this time.
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UPDATE (5:06 p.m.) - Law enforcement officials say a person is barricaded inside the Cortina d'Arroyo Grande Senior Apartments on Courtland St. in Arroyo Grande.
No further information has been made available regarding the suspect or alleged crimes involved.
A SWAT team is now at the scene.
Earlier in the afternoon, officers were seen escorting paramedics with a gurney into the building but no patients have come out.
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(4:19 p.m.) - Multiple law enforcement agencies are on scene along Courtland Street in Arroyo Grande Wednesday afternoon.
Officers at the scene are not sharing any details about the operation, but neighbors in the area say they received a Reverse 911 call alerting them to shelter in place.
Courtland Street is closed between Grand Avenue and Brighton Avenue.
According to PulsePoint, the incident began shortly after 3 p.m.
This is a developing story and will be updated with new information as it becomes available.