9:34 AM PT -- A source close to Heather tells us the 56-year-old was agitated during the day, so her parents went over to her home. We're told that's when Locklear got violent, choking her mother and hitting her father. Her mother called the police.
Heather Locklear was taken to a hospital for a psych evaluation after a family member claimed the actress was threatening to kill herself ... TMZ has learned.
Law enforcement sources tell us a family member called 911 Sunday afternoon to report they were concerned for Heather. We're told both the Ventura County Fire and Sheriff's Departments responded to Locklear's home.
According to the dispatch audio, the caller claimed Heather was acting erratically and threatening to hurt herself ... the caller said Heather was trying to find a gun to shoot herself.
Locklear was then transported to a hospital -- we're told the incident was only medical, nothing criminal.
TMZ broke the story ... Heather was arrested back in February for felony domestic violence against her boyfriend. During the arrest, Locklear allegedly threatened to shoot officers if they ever returned to her home.
We're told, given the recent history, the Sheriff's Department sent multiple units Sunday to handle any possible threat.
Cops are taking a hard look at Tekashi69 to see what, if any, role he played in the events leading up to the attempted shooting of Chief Keef ... TMZ has learned.
Law enforcement sources say NYPD wants to see if Tekashi has any connection to the 2 men who shot at Keef outside the W Hotel in Times Square. 6ix9ine was in L.A. at the time of the shooting, but we're told cops want to know if he ordered the hit.
We're told NYPD has 2 suspects based on surveillance video, and know they stalked Keef the night of the shooting -- first showing up at China Chalet restaurant where Keef was hanging downtown ... then jumping into a dark-colored Ford Econovan.
After driving to midtown, we're told the suspects parked the van around the block from the W and walked to the hotel to wait for Keef. When the rapper walked outside with a friend to smoke a cig, the suspects pounced. Keef and his friend heard shots and saw a muzzle flash.
As we reported ... the shooters missed, hitting only a nearby sign. We're told the suspects fled in the van. Cops eventually found it in Brooklyn.
Tekashi's denied any involvement. We reached out to NYPD for official comment. So far ... no word back.