A Kauai judge declared a mistrial in a case against a former law enforcement officer after jurors deadlocked on 19 counts of sexual assault of a minor and found him not guilty on four counts.

Circuit Judge Kathleen Watanabe declared the mistrial Monday after jurors reached an impasse on the 19 counts of sexual assault against Tarey Low, according to court records. A hearing is scheduled for Sept. 20 to determine whether Low will be retried, according to The Garden Island newspaper.

Low was indicted by a Kauai grand jury on 30 counts of sexually assaulting a female minor from June 2007 to April 2014.

After being acquitted last week on five of the counts, Low was found not guilty Monday on four counts; jurors reached an impasse on 19 counts; and in mid-August Watanabe granted a motion to dismiss with prejudice two counts of third-degree sexual assault.

Attorney Thomas Otake, who is representing Low, could not be reached for comment. Kauai County Prosecutor Justin Kollar also could not be reached for comment.

Low began working as a conservation enforcement officer in 1990. He became the Kauai branch chief of the Division of Conservation and Resources Enforcement in 2001 and retired in 2009.

Low previously served as a police officer with the Kauai Police Department in the 1980s before he started working as a conservation enforcement officer.