"To contact the police" means to get in touch with and communicate with the law enforcement authorities for reporting a crime, seeking help, or providing information about an incident. Full definition
It wouldn't hurt to contact police departments in the area. (shelterme.tv)
If you have good reason to fear for your personal safety and the stalking has no legitimate purpose, please contact the police immediately. (familylawhelp.ca)
If you have any concerns at all about your safety - regardless of how or where you initially met the individual in question - you should always contact the police in the first instance. (soulmates.theguardian.com)