Jack Osbourne has opened up about his part in saving a woman's life in Hawaii.

The reality TV star was among a number of people who assisted the woman after she reportedly suffered a heart attack in the water and after some social media users accused Jack of trying to take all of the credit, he clarified what actually happened.

He wrote on Facebook: ''OK...I have seen a couple posts from people being oddly hostile and rather rude in regards to what happened with the lady on the beach who I'd helped rescue. I would like to to clarify exactly what happened. On 10/8/12, I was approached by a family member telling me he had just seen a woman being pulled out of the water who'd drowned. I grabbed my friend Tyler who was a former Army operator and we went to see if we could be of assistance. In case you are not aware, I was a police reserve for 5 years and have had a lot of training in CPR and as a first responder. I am not an EMT or Paramedic, but I have assisted in resuscitating individuals in the past (sic).''

Jack revealed he and Tyler assisted the doctor at the scene and took over chest compressions as the woman was brought back to the hotel in a golf cart to meet the paramedics.

He said: ''When Tyler and I arrived on the scene, the woman was not conscious and had approximately 5 people assisting in an attempt to resuscitate her. A neurosurgeon from Japan had taken charge in trying to manage the chaos though she did not speak much English.

''The golf cart with the spine board then pulled up Tyler, myself, and another woman all got onto the cart with her...and Tyler and I began administering chest compressions. Because of the angle Tyler was sitting, he couldn't get a solid downward motion for the compressions. Tyler and I switched positions, and I straddled the woman in order to get the right amount of leverage for the chest compressions...As soon as the EMT's arrived, I backed away and let them take over.

''I never said I was the sole contributor in the rescue. In fact, I haven't said anything at all. The last thing I want to do is take all of the credit when in fact there were a few people who helped save her life.

From what I've heard, she's doing better and is now awake. I hope she has a speedy recovery (sic).''