Lawrence police are investigating what was reported to be a home invasion and robbery in which the suspect was armed with a knife.

Officers were called to the 4100 block of West 24th Place about 4:30 p.m. Thursday. Sgt. Troy Squire said Thursday evening that the case had been turned over to detectives, who were interviewing witnesses. No suspect was in custody at that time, and there was not a suspect description. Squire couldn’t comment on whether any injuries were reported, but, according to emergency dispatch traffic at the time of the call, medical units left the scene without any patients shortly after they arrived.