"Kill Bill" star Michael Madsen was arrested in L.A. today on suspicion of felony child endangerment ... TMZ has learned.
Law enforcement tells us ... Madsen was arrested in Malibu at 3:55 PM PST ... and he was taken to a nearby Sheriff's Dept. where is currently being held on $100,000 bail.
So far, the details surrounding the incident which led to the arrest are unclear.
Madsen is no stranger to the law ... back in 2008, he was taken away from his home on a 5150 psychiatric hold after family members became alarmed by his behavior.
Story developing ...