Immigration agents were looking for a different person when they shot Lorenzo Salgado Araujo during a traffic stop, officials say.
The move comes after Mexican national Lorenzo Salgado was shot dead by an ICE agent in Houston on Tuesday.
Protesters echoed mounting demands for an independent inquiry into the shooting of Lorenzo Salgado Araujo, 52, a Mexican national.
Some staff have been signed off work sick since footage of them in "compromising situations" was shared around schools.
Nearly 40% of the security staff at the George Bush airport did not show up - the highest such rate in the country, US media report.
Classes at Gryffe High in Houston are claimed to have taken place in temperatures below health and safety guidelines.
Andy Paterson compared the scene on the M74 overnight to a zombie movie.
Julian Guzman, 11, was shot and killed after ringing the doorbell and running away, police said.
The Texas roommate of a British student nurse is charged with murder after she was stabbed to death.
