A 21-year-old Trump supporter who didn’t like “race mixing” has been identified as the El Paso, Texas Walmart shooting suspect.

While police haven’t officially announced the shooter’s identity, The Washington Examiner reported: “a law enforcement source in El Paso told the Washington Examiner that 21-year-old suspect Patrick Crusius from Dallas, Texas, has been taken into custody.”

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Police said at least 20 were killed, dozens more were wounded and one person was in custody following a mass shooting Saturday morning (Aug. 3) at a Walmart in El Paso, Texas.

El Paso Police Sergeant Robert Gomez said phone calls started coming in around 10 a.m. Mountain Daylight Time (11 a.m. EST) about an active shooter at the El Paso Walmart, which is located in the area of the Cielo Vista Mall.

Authorities said at least 11 victims were transported to the University Medical Center of El Paso.

Sgt. Gomez said initial reports saying the shooter used a rifle couldn’t be confirmed. He also confirmed that earlier reports of multiple shooters and multiple shooting locations were inaccurate.

Patrick Crusius was first identified as the gunman by Washington Examiner reported Anna Giaritelli, who says she was informed by a law enforcement official.

According to the law enforcement official, Crusius just celebrated his 21st birthday this week.

Social media accounts believed to belong to Crusius were reportedly scrubbed from the internet not long after the attack and his name was released online.

However, several screenshots were posted seemingly showing Crusius in support of President Donald Trump and his infamous border wall.

A manifesto reportedly written by Crusius included anti-immigrant rhetoric with the writer going in-depth about why they’re “against race mixing.”

The writer also criticized both major political parties in the U.S., but also stressed that they support the Republican Party’s immigration policies.

The writer also made references to alleged Christchurch mosque shooter Brenton Tarrant.

The authenticity of the manifesto has yet to be verified, however, the FBI said they were aware of it and are investigating.