Divers to spend second day scouring NSW river for missing teacher

Divers are expected to spend a second day searching the Clarence River in NSW as police investigate the suspicious disappearance of teacher Sharon Edwards.

Ms Edwards, 55, was last seen between 10pm and 11pm on Saturday, after spending the afternoon with close friends at the Good Intent Hotel in Grafton on the north coast

The primary school teacher didn't turn up to work at Coutts Crossing Public School on Monday morning and her husband reported her missing the next day.

Police this week forensically examined three properties the pair own together, one in Grafton and two, including a vacant block, in nearby Lawrence.

It is understood Ms Edwards lives in the Grafton home and her husband often stays at the Lawrence property.

Police divers and the water police joined the search yesterday with a focus on the Clarence River.

Police say she didn't have a history of mental illness and they hold grave concerns for the mother-of-three.