Erik Alvarez, 42, pleaded not guilty Monday to three felony counts of lewd or lascivious acts with a child and unlawful sexual intercourse with a minor.
Alvarez allegedly began molesting the girl when she was 15 in 2009 and continued into 2011.
Alvarez was arrested Wednesday, Apr. 27, by Upland police. He remained in jail on $250,000 bail.
Long Beach Police fired Alvarez.
Alvarez is scheduled to appear in San Bernardino County court Thursday.
City News Service contributed to this report.