An off-duty police officer and another female cyclist were seriously injured in a suspected hit-and-run incident Esperance while on a charity bike ride on Tuesday afternoon.

Esperance police are calling for witnesses to the incident which saw the cyclists thrown from their bicycles on Goldfields Road in the Esperance suburb of Castletown, at about 12.45pm.

Two cyclists have been struck down by a vehicle in a suspected hit and run in the Esperance suburb of Castletown. Credit:The Esperance Express

Senior Sergeant Richard Moore of the Esperance Police Station said three cyclists were riding south on Goldfields Road when two of them were hit by a red 1984-87 Mitsubishi Pajero.

"Three cyclists were heading south on Goldfields Road as they approached Reynolds Road," he said.Sarah Scantlin, who found her voice after existing in a minimally conscious state for decades, died May 20, just two weeks after her 50th birthday.

She had been speaking for the past 11 years and her brother, Jim Scantlin, says that allowed their family time to build more cherished memories.

Before that, for 20 years, there wasn't a doctor who expected Sarah to ever speak. She had been hit by a drunken driver as she walked through a Hutchinson parking lot in 1984. She existed in silence, minimally responsive, subsisting on a feeding tube, unable to do anything for herself. Her adult life was lived inside the walls of Diversicare of Hutchinson, being moved from her bed to a lounge chair. Her eyes would open, but stare blankly. Sometimes they