A car spotted fleeing the scene of a robbery in Fairfax County led officers on a chase that involved 27 cruisers from four area police departments before it wound up near the Washington Monument early yesterday morning, Fairfax County police said.

Three Maryland juveniles and two women from Washington were arrested by U.S. Park Police when the car in which they were riding was finally stopped.

Fairfax County police spokesman Warren Carmichael said police were called to a 7-Eleven convenience store at 3011 Patrick Henry Drive in Fairfax County shortly after a 4:15 a.m. robbery. The store's clerk told police that two young men entered the store; one waved a gun while another emptied the store cash register.

Soon after the clerk's description of the suspects went over police radio, Carmichael said, an officer in his car near the store thought he recognized the suspects in a car that drove past him on Rte. 50, and began to pursue them.

Carmichael said the suspects' car started to pick up speed along Glebe Road as Arlington police joined the chase. When the car entered Washington, District and Park police joined in. Finally, the suspects' car was stopped near the Washington Monument.

Arrested and charged with robbery were Gloria Ann McCastle, 33, of 33 K St. NW; Shirlen Kelly, 32, of 1324 Park Rd. NW, and three 16-year-olds from Oxon Hill.