Interim Brownsville Police Chief Orlando Rodriguez said Thursday that police officers have received a number of negative calls, including at least one threat, since Wednesday’s fatal shooting of a middle school student.

The threatening call was made overnight Wednesday to the police department’s dispatch center, authorities said.

According to a copy of that call, a male greets the police dispatcher and congratulates her on a wonderful police department that "shoots down your own kids. When I find the person that did that, it is going to make history when I find it," the caller says.

He tells the dispatcher bye and hangs up the phone. It is unknown who made the call.

Two police officers shot and killed 15-year-old Jaime Gonzalez Jr. at Cummings Middle School. Authorities said Gonzalez pointed a handgun at the officers and refused to put it down.

Gonzalez was shot at least two times. Police later determined the weapon Gonzalez was carrying was a pellet gun.

The names of the officers have not been released, although they have been placed on administrative leave, which is common procedure.

Rodriguez said he was debriefed on the phone calls Thursday morning and that all supervisors and officers have been informed of the calls and advised to remain cautious.

"All threats are always taken seriously. You just never know. It comes with the territory. Officers are always cautioned to use vigilance and hypervigilance when they are on the streets," Rodriguez said.

He said it is not unusual for the department to receive threats, especially after a serious incident has occurred.

"Certainly we understand there is going to be reactions such as what we are getting, but they come in periodically anytime throughout the year."

The interim chief said he doesn’t believe the community as a whole is outraged at authorities by the incident because as people learn the circumstances of the shooting, there is support for the police department.

"They are understanding of what law enforcement entails. There are always going to be a select few who make negative comments and threatening comments," Rodriguez said.