Police believe someone is trying to cause flat tires or harm bike riders and pedestrians along a stretch of road near Kensington and Silver Spring in Maryland.

The Maryland-National Capital Park Police are investigating at least five calls over the last month for wooden boards with protruding nails and screws on Beach Drive, between Knowles Avenue and Garrett Park Road.

“These items pose hazards to pedestrians, bicyclists, and vehicles,” police said in a news release. “Due to the frequency of incidents in one location, the Park Police does not believe accidental occurrence is to blame, but instead the deliberate act of someone.”

Whoever is responsible could face charges of malicious destruction of property and reckless endangerment, officials said.

Anyone with information is asked to contact Maryland-National Capital Park Police by calling 301-949-8010. Tips may be submitted online to Crimetips@mncparkpolice.org.

Below is a map of the area:

[google_map latitude=”39.0368521346716″ longitude=”-77.08524506668307″ zoom=”14″ height=”300px” location_label=”” dynamic_map=”false”]