Dashcam captures moment a police officer saves a three-month-old baby

Dashcam footage from a Florida police cruiser has shown the heart-stopping moment an off-duty officer saved a three-month-old baby's life.

The Marion County Sheriff's Office posted the video that showed the rescue on Facebook.

It begins with white sedan pulled over at an intersection, flashing its lights to try and get K9 officer Deputy Jeremie Nix's attention.

He pulls over and then terrified mother Nechole Crowell then sprints out of the car towards him carrying baby Kingston.  The little boy was unresponsive and barely breathing.

After taking the baby from Ms Crowell Deputy Nix knelt on the ground and began giving the baby CPR, but he wasn't responding very much.

The officer then decided the best course of action was to get the baby help from professionals and rushed to his car with the child.

He took the child to a nearby medical centre and once he was treated by doctors he improved significantly.

He's now expected to make a full recovery and doctors say his survival is down to Deputy Nix's quick thinking.

"Doctors also said that because of K9 Deputy Nix's actions, Baby Kingston is alive today," a post on the Marion County Sheriff's Office Facebook page said.

"We are tremendously proud of Deputy Nix and we can already see that he and Baby Kingston will have a deep connection that will last a lifetime."

His mother commented to say she was extremely grateful for Deputy Nix's help and provided more details on the rescue.

"My son KING was barely breathing, and fighting for his life. My sister and I noticed an officer sitting at a red light and we got his attention," Ms Crowell wrote.

"With his fast thinking HE AND GOD saved my son."

Deputy Nix visited Kingston later that day and photos from the medical centre show him cradling the now recovered infant in his arms.