A third teenager has been arrested on suspicion of murder after a 16-year-old boy was stabbed to death, police said.

The 15-year-old was detained in connection with the death of Ramarni Crosby in the Tredworth area of Gloucester.

Gloucestershire Police said two other boys, aged 16 and 17, remain in custody having been arrested earlier on suspicion of murder.

The teenager, known as Marni, who was from the Frampton on Severn area of Gloucestershire, was stabbed on Wednesday in Stratton Road. He died at the scene.

Police have appealed for anyone with dashcam footage of the surrounding roads, particularly between 5.30pm and 6.30pm on Wednesday, to come forward.

They would also like to speak to anybody who saw a large group of young men hanging around the Barton and Tredworth area in the time leading up to the incident.

On Thursday, Chief Inspector Rich Pegler said: “The family of this young man has been informed and our thoughts go out to them at this devastating time.

“Both ourselves, and Ramarni’s family, are asking any witnesses, or any parents who know of their child’s involvement, to come forward.

“This was a horrific incident, which is even more tragic because of the young age of the victim.

“It has understandably sent shockwaves through the community and caused a huge outpouring of anger and grief.

“This once again shows the devastating impact that knife crime can have.”