OKC Water Department Employee Accused Of Shooting Threat

Guns, ammo and threats against their lives. Police say city employees alerted them concerned their co-worker would go on a shooting spree.

Documents filed Friday, reveal those workers believe they've seen warning signs for more than a year.

In legal documents News 9 obtained, co-workers of 39-year-old Pedro Calderon say he was on a downhill mental spiral, and they believed he was capable of a mass shooting.

Possibly "disgruntled and unhappy" working at the Oklahoma City water department, days before Pedro Calderon threatened to kill his co-workers; he allegedly showed one of them two loaded handguns while at work.

According to court documents, Calderon not only showed his colleague those guns, but pulled the magazines out of each one of them and showed him the bullets to prove they were real and loaded.

That was on August 27. On September 1, he told a city employee he was going to "come into work with guns and blow people's heads off."

Police were called and during a search of his work bag, 100 rounds of live ammunition were found.

A city spokesperson told News 9 Calderon was hired to work for the city in April of 2013 and was a water line maintenance worker at the utilities department.

But Pedro is a felon and the city says they were aware of his history.

Court documents reveal he has prior convictions in two other states. Two of those convictions involve fire arms possessions, one in Michigan and the other out of Compton, California.

The city says it hires felons "depending on what position they're seeking."

In a statement, the city says:

"Employees are encouraged to call police if they feel they are in danger. The City of Oklahoma City has a policy that prohibits violence and firearms in the workplace." 

Calderon is technically still employed with the city but News 9 was told he's on administrative leave pending the outcome of a hearing.

He was arrested for an unrelated warrant and is out on bond.