Max Joseph Plog-Horowitz
Max Joseph Plog-Horowitz (Federal Bureau of Investigation)

SAN FRANCISCO -- Federal authorities recently arrested a Hayward man for violating his probation after he impersonated an FBI officer and want to know if the public has ever come into contact with him while he pretended to be an agent.

Max Joseph Plog-Horowitz, 21, who often goes by the alias "Max Heartmann" was convicted of charges including impersonating a federal officer on March 25 and sentenced to nine months of supervised probation, according to information from the San Francisco Field Office of the FBI.

At the time of his initial arrest on July 23 in Hayward, authorities located false government identification and other forged law enforcement documents.

On May 16, authorities arrested him at his Oakland home for violating terms of his supervised release, according to the FBI.

An investigation revealed that while serving probation, Plog-Horowitz allegedly obtained a less-than-lethal FN 303, which is a semi-automatic riot control gun, other law enforcement paraphernalia and a handgun.

Wednesday he remained in federal custody and was scheduled to appear in court for a hearing on the matter June 24.

Plog-Horowitz is described as a white man, 5-feet 4-inches and 120 pounds. He has brown hair and hazel eyes and is known to drive a white, 2012 Ford F-250 truck with California license plate 04507B1.


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Anyone who has come in contact with Plog-Horowitz while he impersonated an FBI agent is asked to call 415-553-7400. Calls are confidential and tips can be left anonymously.

Contact Natalie Neysa Alund at 510-293-2469. Follow her at Twitter.com/nataliealund.