The closure and SigAlert went into effect on the highway at Western Avenue around 4 a.m., according to the California Highway Patrol.
SIGALERT: NB US-101 AT WESTERN AVE, ALL LANES BLOCKED UNTIL FURTHER NOTICE DUE TO LAPD POLICE ACTIVITY
— CHP PIO - LA County (@CHPsouthern) May 18, 2017
All lanes were reopened at approximately 6 a.m.
Details on the possible suicide investigation were not immediately released.