Ahead of the release of Venkat Prabhu's Custody on May 12, the makers released the behind-the-scenes video showing how the underwater scene from the film was shot. 

The less-than-a-minute video shows both Krithi Shetty and Naga Chaitanya learning to hold their breath underwater, and other swimming tricks like diving. 

Naga Chaitanya will be seen in the role of a constable. The film also stars Arvind Swami, Sharath Kumar and Priyamani. Custody is backed by Srinivasaa Silver Screen. 

The technical crew of Custody consists of SR Kathir as the cinematographer and music is scored by Ilaiyaraaja and his son Yuvan Shankar Raja. Editing is by Venkat Raajen, while Rajeevan handled the production design. Venkat Prabhu has penned the dialogues for the film in Tamil, while Abburi Ravi has penned the Telugu dialogues.