Jake Gyllenhaal has said his new film End of Watch is about friendship and trust.

The film had its world premiere at the Toronto International Film Festival on Saturday.

The movie features Gyllenhaal and Michael Pena as young police officers in Los Angeles who are assigned to patrol the crime-ridden and dangerous streets of south-central LA.

Gyllenhaal said: "What I didn't realise was inside that police car or whatever police car what you see are two friends. Two people that have to, whether they are willing or not, give their life for the other or have to protect the other.

"The cartel, gangs all those situations, things like that happen and all that is real. We saw a number of situations like that happen that are then portrayed in the movie.

"So it is art, it is a movie in the end and it is fun and action and all of that, but ultimately it is actually happening".

The film hits UK cinemas on November 23rd.