Rotterdam police are searching a lake for a potential murder weapon connected to an unsolved case. Following a new tip, investigators began scouring the Ringvaartplas in Rotterdam-Prinsenland on Monday morning. The search focuses on locating a firearm believed to be linked to a past homicide in the region. Authorities are hopeful this development may provide a breakthrough in the long-standing investigation. The area is being thoroughly examined by divers and search teams. Details about the original case have not been released to protect the integrity of the ongoing investigation. This renewed effort signals a potential shift in the decades-old cold case.