It was subsequently alleged by then San Francisco District Attorney Terence Hallinan that the elder Fagan, then-SFPD Chief Earl Sanders, and nine other officers were involved in a coverup of the initial November 20, 2002 criminal acts of the three off-duty officers.
He worked for Atherton and Dunn investigation agency, famous for the Edwin Atherton report on SFPD police corruption in San Francisco, California in 1937.
Chief Cahill was hailed at the time of his appointment as SFPD chief by Mayor George Christopher.