ABC News is reporting the Uvalde Police Department and the Uvalde Independent School District police force are not cooperating with a Texas Department of Public Safety investigation into the massacre at Robb Elementary School.

According to ABC’s sources, the police and the school district stopped cooperating after a May 27 news conference, in which Texas Director of Public Safety Steven McCraw said the order to stand down was “the wrong decision,” and against protocol.

It’s an ominous development in this tragedy, one of the worst school shootings in U.S. history. How will we ever know why things went so horribly wrong, and why so many decisions appear to have been contrary to training, if the two of the major institutions involved won’t cooperate? Are they hiding something?

Neither the police chief nor the spokesperson for the Uvalde Independent School District has responded to a request for comment, according to ABC News.

However, they did reach a spokesperson for the Texas Department of Public Safety who said:

The Uvalde Police Department and Uvalde CISD Police have been cooperating with investigators. The chief of the Uvalde CISD Police provided an initial interview but has not responded to a request for a follow-up interview with the Texas Rangers that was made two days ago.

Meanwhile, as we reported, the Department of Justice has announced they will be performing a “Critical Incident review” into the police response to the massacre.

Many questions remain about law enforcement’s actions, including – most importantly – why did officers not storm the school? According to RedState’s Bonchie:

Federal agents who went to Robb Elementary School in Uvalde, Texas, on Tuesday to confront a gunman who killed 19 children were told by local police to wait and not enter the school — and then decided after about half an hour to ignore that initial guidance and find the shooter, say two senior federal law enforcement officials.

This is Pete Arredondo, the Uvalde school district police chief who ordered 19 officers outside the classroom to stand down for an hour, waiting for backup & a key. Arredondo only oversees 4 school cops. Policing experts say the cops should have ignored him & breached the door. pic.twitter.com/uJYM4wScNX

— Mike Sington (@MikeSington) May 27, 2022

Uvalde’s families deserve answers to what happened that horrible day, and these agencies need to cooperate for us to find out.