This is the heartwarming moment a police officer helped bottle-feed a baby after her mother suffered a seizure at a Kansas mall.

When Overland Park Officer Andy Black answered a call on Saturday to help a woman at Oak Park mall, he saw that the mother had recovered somewhat but was still shaking very badly.

As her husband talked to paramedics, Black was concerned that the woman might drop her baby and asked if he could hold the little girl.

This is the heartwarming moment police officer Andy Black helped bottle-feed a baby after her mother suffered a seizure at the Oak Park mall in Overland Park, Kansas

When Black (pictured winning officer of the year in 2013) saw the woman shaking badly, he asked if he could hold the little girl

'She had the baby and was putting the bottle in her mouth, and when she gave her to me, she handed me the bottle,' Black told Fox 4 News.

'The baby started crying. I'm a grandpa. I took the bottle, and I fed the baby.'

Black, who has worked off-duty at the mall for 25 years, has 14 grandchildren.

Artist Jilli Nel captured the simple but touching moment, asking Black when she walked by if she could snap a quick picture.

'I looked and the next thing I saw Officer Black, and there he was, holding this little tiny bundle of joy,' said Nel.

'Just feeding her, the two of them in their own little world.'

'It was so beautiful, it just touched my heart so much that I had to stop and just talk to him.'

Nel then shared the photo on Facebook, writing with the post: 'This is what we don't get to see, the times of the quiet hero, going beyond his duty.'

The photo has since gone viral, although Nel said some have accused it of being staged.

'It wasn't,' she said.

'It was just a pure moment that I had to capture.'