Elderly man, 78, headbutts teen on tram 'after he heard his friend swearing'

Video has emerged of an elderly man headbutting a teenager on a Gold Coast tram.

The 78-year-old and the 18-year-old appear to be holding each other's arms before the older man headbutts the teen in Surfers Paradise on Sunday.

7 News has been told the man punched another teen three times before the video was taken.

It is understood he became angry after hearing another man swearing.

The 78-year-old is seen allegedly grabbing the 18-year-old boy's arms. Photo: 7 News
The 78-year-old is seen allegedly grabbing the 18-year-old boy's arms. Photo: 7 News

Queensland police are aware of the incident, but at this stage are not investigating as they have not received a complaint.