Fire marshals are investigating a series of suspicious brush fires that burned early Monday, July 14, near the East Bank section of Eugene’s Riverbank Path, according to Eugene Springfield Fire.

Firefighters first responded just before 1 a.m. to quickly douse a fire on Goodpasture Island Road. Just after 2 a.m. they responded to a larger fire – about a tenth of an acre – along the East Bank Path west of Marist Catholic High School, according to a fire department statement.

As the second fire burned in dense vegetation, firefighters found a third, smaller fire about a quarter-mile to the north.

The East Bank Path is a 2.8-mile section of the Ruth Bascom Riverbank Path System, a network of multiuse paved paths along the Willamette River. The East Bank portion runs from Delta Highway to the Greenway Bridge at Valley River Center.

Three fire engines, two brush trucks and an all-terrain vehicle responded to fires all within a mile-long section of the trail, according to the fire department, with the blazes requiring “extensive mop-up.”

Eugene police and two deputy fire marshals also traveled to the scene, and the fires remain under investigation.