State Police are assisting in a pursuit initiated by Amesbury police that led troopers into Salisbury, officials said.
State Police have sent an air wing unit, a K-9 unit, and cruisers to assist in the search.
It is unknown why the pursuit was initiated, or who is being chased.
Kathy Chaisson-Orben, 49, who lives on Ferry Lots Lane in Salisbury, said she saw at least six police cruisers rush by her house this morning.
“I counted six cruisers, and my friend said she saw 14, staties and everything,” Chaisson-Orben said.
“The street is a dead end, it leads to the river. There are a lot of woods and marshland around as well.”