As the New York Times reported Friday, FBI agent Tracee Mergen, acting supervisor of the office’s Public Corruption Squad, resigned after senior FBI officials in Washington pushed her to end a civil rights probe into the killing. The agency is focusing on investigating Good and her wife, who were legally observing US Immigration and Customs Enforcement, instead of determining whether ICE agent Jonathan Ross used excessive force.

An FBI source told CBS News that Mergen “would not bow to pressure” from the agency’s leaders.