SOUTH SAN FRANCISCO (CBS SF) — A South San Francisco man was arrested Thursday morning after he beat another man to death at a gym where they were both members, according to police.

Police were called to the gym on the 100 block of El Camino Real in South San Francisco around 9:30 p.m. yesterday on a report of an assault.

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Witnesses told officers that a gym member, later identified as South San Francisco resident Kenneth Osako, 46, had attacked another gym member with a solid steel bar normally used to lift weights.

Kenneth Osako (San Mateo County Sheriff's Office)

Kenneth Osako (San Mateo County Sheriff’s Office)

Osako, a plumber, allegedly struck the man in the head several times, the dropped the steel bar and left the scene, police said.

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The victim was taken to San Francisco General Hospital, where he died today of his injuries.  He was identified by  the San Mateo County coroner’s office as 43-year-old San Bruno resident Diego Galindo.

Osako was located Friday morning and arrested by South San Francisco police and a special agent from the Department of Homeland Security, police said.

He has been booked into San Mateo County jail on suspicion of murder.

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