Donna Interim City Manager Frank Perez confirmed Monday that police Chief Gilbert Guerrero was fired. 

In a statement, Perez says Guerrero was fired due to the police chief's failure to act on threats made toward students at Donna ISD last month. 

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The threats led to the arrest of two minors and two 17-year-old students, who were charged with conspiracy to commit aggravated assault with a deadly weapon.

Perez says Guerrero didn't act on the threats and ordered his officers not to pursue the anonymous caller's tips. 

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Instead, it was concerned officers who pursued the tip which led to the arrest of the four individuals, Perez said. 

Perez says he made the decision to terminate Guerrero after gathering information from eyewitnesses who were present when Gurrero decided against acting on the tip. 

According to a city agenda, the Donna city council will hold a special meeting Thursday to discuss reinstating Guerrero as police chief. 

Guerrero plans to speak with Channel 5 News Tuesday morning. 

This is a developing story. Check back for updates.