A rat infestation in a property room holding 1.2 million pieces of evidence is sparking concerns. "Anytime evidence is compromised, then cases could be compromised," a defense attorney said.

Some city buildings in Houston are facing a rat problem. The police evidence locker has apparently been infiltrated by rats and they’ve destroyed some paperwork.

"Drug-addicted rats" are eating narcotics seized and stored by Houston police, prompting a change in how long the department is required to store the evidence, officials said.