An 84-year-old man reportedly died after a violent attack last week in San Francisco.

Video footage of the incident showed another man make a bum rush into Thai native Vicha Ratanapakdee at around 8:30 am on a driveway Thursday. According to KTVU, the Fox-owned television station in Oakland, the incident took place in San Francisco's Anza Vista neighborhood.

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KTVU obtained the footage, which was captured by a neighbor. Paramedics found Ratanapakdee on Anzavista and Fortuna Avenues, and he succumbed to his injuries two days after the assault.

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It's unclear what motivated the attack. San Francisco police have arrested 19-year-old Antoine Watson of Dale City on suspicion of murder, along with Malaysia Goo, 20, for allegedly serving as an accessory after the attack.

Police reportedly served a warrant at Watson's home. In addition to suspicion of murder, Watson was also booked on assault with a deadly weapon and elder abuse.