(CNN)- Broward County Sheriff Scott Israel says he's not stepping down amid criticism of his department's response to the deadly shooting at Marjory Stoneman Douglas High School in Parkland, Florida.
Israel's declaration comes after a Florida state representative called on Gov. Rick Scott to remove Israel from his post for his deputies' "incomprehensible inaction" during the massacre.
An investigation "by Sheriff Israel will do nothing to bring back the 17 victims," Bill Hager said in a letter to the governor, referring to the students and teachers confessed shooter, Nikolas Cruz, killed.
"The Sheriff was or should have been aware of the threat Cruz presented to his community and chose to ignore it," Hager claims.
He's referring to a long history of warnings and tips to the sheriff's office over the past decade, including ones suggesting Cruz had fire arms and was planning a school shooting.
In his letter, Hager, a Republican, cites Florida statute 112.52, which he says gives Scott "removal authority for neglect of duty and incompetence."
Israel dismisses Hager's accusations, telling CNN's Jake Tapper, "Of course I won't resign."
"It was a shameful letter. It was politically-motivated. I never met that man. He doesn't know anything about me. And the letter was full of misinformation," Israel said on CNN's "State of the Union."
Hager's call for Israel's removal came after the armed school resource officer at Marjory Stoneman Douglas, Deputy Scot Peterson, resigned Thursday following his suspension amid accusations he did nothing to stop the massacre.
Israel says Peterson never went into building where the shooter was firing at students, instead taking a position outside.
In a letter of response to the governor, Israel said he was proud of the work that many of his deputies and other agencies did the day of the shooting and that he was appalled by Hager's "need to engage in disingenuous political grandstanding, perhaps in the hope he will garner some headlines, at the expense of the truth."
He also said that Hager's letter "was riddled with factual errors, unsupported gossip, and falsehoods."