PHOENIX — An Arizona lawmaker has filed a second ethics complaint against Rep. David Stringer, citing the Prescott Republican's remarks on race and a recently published report that he was charged with sex crimes in 1983.

Democratic Rep. Reginald Bolding filed the complaint Tuesday, a day after he asked the House to expel Stringer. Republicans blocked a vote on expulsion.

Bolding's ethics complaint says Stringer "has engaged in a pattern of conduct that demonstrates that he is unfit to serve in this august body."

The complaint also mentions Maryland court documents uncovered by The Phoenix New Times that show Stringer was charged with multiple sex-related offenses, including child pornography and patronizing prostitutes. 

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The Phoenix New Times reported last week that the 1983 charges were expunged.

Stringer has not responded to requests for comment over several days. He faced criticism last summer when he was filmed calling immigration an existential threat to the country and again in November when he told Arizona State University students that African-Americans "don't blend in."

Last week, before the New Times revealed the sex crime charges, Stringer delivered an unexpected apology for his previous remarks on race. 

Republican Rep. Kelly Townsend has also filed an ethics complaint against Stringer.