Stuart Johnson, Deseret Morning News
Jason Putnam, right, stands with his attorney, Gunda Jarvis, while entering a not guilty plea in 4th District Court Tuesday. Putnam is charged with murdering his son.

PROVO — Standing with slumped shoulders and talking in a soft voice, Jason Putnam pleaded not guilty Tuesday to an aggravated murder charge.

Putnam is accused of killing his 20-month-old son, Jordan.

However, Putnam's attorney, Gunda Jarvis said she is "working towards a possible resolution" of the case. A plea deal is a possibility, she said.

Putnam's life could be on the line.

The prosecution could seek the death penalty and now have 60 days to file a "notice of intent" to seek the capital charge.

Police say Putnam called American Fork police on June 12 and reported his son wasn't breathing. He said the baby had fallen off a bed.

Jordan Putnam was taken to Primary Children's Medical Center and died that day.

A CT scan showed Jordan Putnam had internal bruising, a ruptured spleen and a fractured skull, officials say.

American Fork police said Putnam told them he would beat and punish his son when he cried so he would grow up to be tough. Officials say he had squeezed the boy hard enough to rupture an organ.

Putnam and his wife have a 4-year-old daughter who officials say was not abused.

Putnam is being held in the Utah County Jail. His bail was revoked when prosecutors successfully argued to a judge that he had fatally tortured his son and he shouldn't be allowed out of jail.

Putnam has a criminal history of theft and burglary. He was on felony probation at the time of his son's death.

A pre-trail conference was scheduled for Feb. 19.

Contributing: Sara Israelsen-Hartley