Three sex crimes were reported in the past week, including two on Halloween, police say, though, no arrests have been made in any of the cases.

At 3:38 p.m. Monday police responded to the 1200 block of Delaware Street, where a sex crime involving a minor was reported, said Lawrence Police Sgt. Amy Rhoads.

Another sex crime was reported Monday at 9:50 p.m. in the 1800 block of Naismith Drive, Rhoads said. And a third was reported Thursday at 11:43 a.m. in the 300 block of Maine Street.

Rhoads said no arrests have been made in either of the cases on Halloween, and the Lawrence Police Department incident number for Thursday’s report does not coincide with any recent arrests in the Douglas County Jail booking logs.

In addition to the three reports within the past week, no arrests have been made regarding a fourth sex crime report from Oct. 20, Rhoads said.

On the afternoon of Oct. 20, Rhoads said, a sexual assault involving a minor was reported in the 1600 block of Haskell Avenue. Previously she said police are actively investigating the report.

Rhoads would not provide additional details regarding the four reported sex crimes.