(CNN) Carter Cookson, the three-week-old baby who urgently needed a new heart, passed away on January 19 after a donor was not found in time.

The Facebook group, Find a Heart for Carter , shared a post from his mother Saturday letting followers know that he had died.

His parents, Sarah and Chris Cookson, started the social media campaign #findaheartforcarter, hoping to locate the heart that their son needed to survive.

"Today he could not fight anymore... at 5.44 pm our brave baby boy Carter John Cookson gained his angel wings and flew into his big brothers arms," the post said.

The Cookson's first son, Charlie , died in 2013 at the age of two. He had an unidentified progressive disease that caused frequent seizures and he was unable to breathe, eat or sit up without help.

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