A Cleveland prosecutor was fired this week after he admitted posing as a woman in a Facebook chat with an accused killer's alibi witnesses in an attempt to persuade them to change their testimony, the Cleveland Plain Dealer reports. Former prosecutor Aaron Brockler insisted in an interview that he had done nothing wrong and shouldn't have been fired. “Law enforcement, including prosecutors, have long engaged in the practice of using a ruse to obtain the truth,” said Brockler, 35, a prosecutor since 2006. “I think the public is better off for what I did.” Cuyahoga County Prosecutor Timothy McGinty said he fired Brockler for good cause. “This office does not condone and will not tolerate such unethical behavior,” he said. “He disgraced this office and everyone who works here. By creating false evidence, lying to witnesses as well as another prosecutor, Aaron Brockler has damaged the prosecution's chances in a murder case where a totally innocent man was killed at his work.”