An Alton father accused of killing a man who police identified as the suspect who attacked his son and the son's mother is behind bars.

William Ricardo Hernandez was arraigned on March 13 on charges of murder and two counts of aggravated assault with a deadly weapon. His bond was set at $1.2 million.

According to a news release issued on Wednesday, March 18, 2026, Hernandez was arrested at the Hidalgo port of entry.

Hernandez is accused of intentionally causing a crash on Oct. 23, 2025, that killed Danny Treviño. Danny was identified as one of several suspects that allegedly assaulted Hernandez's son and his son's mother.

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As previously reported, on Oct. 23, a woman said she had been attacked by suspects identified as Danny, Juventino Rosales Jr., Crystal Treviño, and Vanessa Hernandez.

A news release said that during the assault, Rosales allegedly pointed a gun at Hernandez's son when he tried to protect his mother.

Alton police officers later responded to a crash near South Stewart Road and East Israel Avenue that police described as intentional.

Hernandez was identified as the driver who intentionally struck another vehicle occupied by Danny and a female passenger. Danny was pronounced dead at the scene, and Hernandez had fled the area.

The Thursday news release revealed that Danny's two minor daughters were also in the vehicle when the crash occurred.

Rosales was arrested in December 2025 on multiple charges, including three counts of deadly conduct and two counts of aggravated assault with a deadly weapon. His bond was set at $190,000, and he remains jailed.

As of Tuesday, Hernandez remains jailed.