LINCOLN, Neb. (AP) — A 67-year-old Lincoln man has been accused of molesting five girls over several years.

Lincoln Police Sgt. Brian Agnew said in court documents that Michael J. Martin molested the girls between 1997 and 2015. Martin faces one count of first-degree sexual assault of a child and five counts of third-degree sexual assault of a child.

Court records show Martin is being represented by an attorney from the Lancaster County Public Defender’s Office. A message left with the office was not immediately returned Wednesday.

Police say Martin knew the girls and in some cases the alleged abuse happened over several years. Agnew said the youngest girl was 3 years old when the abuse began.