SAN ANTONIO (AP) — San Antonio police say a homeless man accused of fatally shooting a man after an argument on a city bus has been arrested.

Police say 41-year-old Jose Rocha faces a murder charge in the death of Aaron Riedner, who died Saturday of a gunshot wound to the chest. Rocha, who was arrested Sunday evening, remained in jail Monday on $250,000 bond. Jail records don’t list an attorney.

The San Antonio Express-News reports that a police report says Riedner got into an argument with Rocha’s friend on a city bus. Police say Rocha then followed Riedner as he exited the bus and shot him.

Authorities haven’t said what the argument was about.

Police say officers arrested Rocha after getting an anonymous call that he was hiding behind a tire shop.

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