Residents of the small town of Armstrong, B.C., are anxious after RCMP received a letter from someone claiming responsibility for the murder of 18-year-old Taylor Van Diest and warning of more violence against women.

"To say that more women are going to be at danger, that's very devastating," resident Irene Hannah told CTV News.

Acting mayor Ron Sullivan is also perturbed by the letter's threat that more women could be harmed.

"Why would somebody do that? I don't know," Sullivan said.

Sullivan met with the RCMP on Thursday and was told Mounties are bringing in more patrol officers. The city is also working to improve lighting and residents are being told it's dangerous to walk outside at night.

The acting mayor wants to provide another option for community members who want to go outside.

"This is a great city for walking, so we're going to open this arena probably Monday… for people to walk rather than walking out on the streets," Sullivan said.

With a report from CTV British Columbia's Lisa Rossington