Police investigating the alleged assault of a male youth near Devonport Bluff early Monday morning have charged four people over the incident.

A 19-year-old Devonport man, a 17-year-old male, a 15-year-old male and a 15-year-old female have been charged with criminal code assault, and stealing, and have been bailed to reappear in court at a later date.

Investigations are continuing.

Police would like to speak to any witnesses to the alleged assault, including anyone holding mobile phone, dash cam or CCTV footage from the area near Bluff Road car park late Sunday night and into early Monday.

The injured youth was taken to North West Regional Hospital for treatment.

Anyone with information can contact Western Division Criminal Investigation Branch on 131 444 or report anonymously to Crime Stoppers Tasmania on 1800 333 000 or online at www.crimestopperstas.com.au Please quote OR number 819326

Police are aware of social media posts relating to this incident, some of it containing graphic content.

Police encourage members of the public to refrain from publishing or sharing this content and to consider the potential trauma to those involved, and to the wider community.