VANCOUVER, Wash. – Former Vancouver police officer Clyde Ray Spencer spent nearly 20 years in prison after he was convicted of sexually molesting his son and daughter. Now, the children say it never happened.

Matthew Spencer and Kathryn Tetz, who live in Sacramento, Calif., each took the stand Friday in Clark County Superior Court to clear their father’s name, the Columbian newspaper reported.

Matthew, now 33, was 9 years old at the time. He told a judge he made the allegation after months of insistent questioning by now-retired Clark County sheriff’s Detective Sharon Krause just so she would leave him alone.

Tetz, 30, said she doesn’t remember what she told Krause back in 1985, but she remembers Krause buying her ice cream. She said that when she finally read the police reports she was “absolutely sure” the abuse never happened.

“I would have remembered something that graphic, that violent,” Tetz said.

Spencer’s sentence was commuted by then-Gov. Gary Locke in 2004 after questions arose about his conviction. Among other problems, prosecutors withheld medical exams that showed no evidence of abuse, even though Krause claimed the abuse was repeated and violent.

Despite the commutation, Spencer remains a convicted sex offender. He is hoping to have the convictions overturned.

Krause declined an interview request from the Columbian in 2005 and could not be reached Friday, the newspaper reported.

Both children said that while growing up in California they were told by their mother, who divorced Spencer before he was charged, that they were blocking out the memory of the abuse.

They said they realized as adults the abuse never happened, and they came forward because it was the right thing to do.