Video of Brutal Attack Outside Bar in Downtown Dallas

A customer at a Dallas bar was brutally attacked over the weekend. 

A security video shows the customer outside of City Tavern on Elm Street being hit in the head by a man carrying a stick from behind. The man then attacked a bystander who had witnessed the crime. The assault happened at around 2 am on Saturday.

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The first victim has been identified as Adam Mercado. NBC 5 reports Mercado was diagnosed with a concussion at a local hospital.

Dallas police are still searching for the suspect as of this posting. 

A GoFundMe was started to help Mercado with his medical expenses. So far, the fundraiser has raised more than $4,000.