Johan Sebastián Guerrero was shot during a traffic stop Monday.
Lorenzo Salgado Araujo was shot and killed on Tuesday.
Lawyers for the man accused of killing conservative activist Charlie Kirk are expected to keep questioning the reliability of DNA testing that prosecutors said links the defendant to the suspected murder weapon when a weeklong hearing continues Wednesday.
"Unfortunately, there has been another death of a Mexican national in the United States," President Claudia Sheinbaum said after Lorenzo Salgado Araujo was shot and killed by an ICE agent.
An investigator says the man charged with killing Charlie Kirk strolled Utah Valley University in shorts and a T-shirt and bought a meal at Chick-fil-A on the morning of the conservative activist's assassination.