The arson suspect who allegedly set the four suspicious fires in Concord over the weekend has been identified as a woman, who was sent to the hospital for evaluation, according to officials.

Local, state, and federal agencies are investigating the four fires that were intentionally set at the Concord post office, National Park and a swim center on Sunday.

The first two fires were reported at noon at the front and rear of Beede Swim and Fitness Center at 498 Walden St., which is located on the campus of Concord-Carlisle Regional High School.

Then the next fire was reported about 30 minutes later at the U.S. Postal Service at 34 Walden St.

The fourth fire was reported about 30 minutes later at a shed on National Park property at 955 Lexington Road.

No injuries were reported at any of the scenes. Investigators determined that the fires had been intentionally set.

“One adult suspect was located in Arlington late in the day and sent to an area hospital for evaluation,” the Massachusetts Department of Fire Services said in a statement.

“The woman was identified in the course of an ongoing investigation by the Concord Police Department, Concord Fire Department, Arlington Police Department, State Police Fire & Explosion Investigation Unit assigned to the State Fire Marshal’s office, National Park Service, the Bureau of Alcohol, Tobacco, Firearms, and Explosives, and US Postal Inspectors,” the state agency added.

The woman has not been charged at this point, and investigators will consult with the Middlesex District Attorney’s Office as the case continues.