Blu Cantrell ‘Hit ‘Em Up Style’ Singer Hospitalized After Ranting … I Was Poisoned!!

tmzSinger Blu Cantrell went running through the streets, ranting about people trying to kill her last night … until police took her into custody for psychological evaluation … TMZ has learned.

Cantrell went seemingly berserk in a Santa Monica neighborhood around 2 AM on Wednesday. Witnesses tell us she was screaming about someone giving her “poisonous gas.” The episode went on long enough that someone called police.

We’re told when officers arrived, Blu — famous for her 2001 hit “Hit ‘Em Up Style (Oops!)” — played the “do you know who I am card” … but also referred to herself as a “one hit wonder.”

Law enforcement sources tell us cops took Blu to a nearby hospital where doctors checked her out. We’re attempting to reach a rep to get an update on Blu’s condition, but so far … no luck.

Story developing .