Ray J comforted Bobbi Kristina at the funeral of her mother Whitney Houston, just moments after he had an emotional breakdown.

The 'One Wish' singer became a talking point of the sad occasion, when he broke down in tears and clung onto the casket as it made its way down the aisle of the New Hope Baptist Church in Newark, New Jersey.

Video footage shows Ray comforting Bobbi Kristina as she followed the casket out of the church, and gave her a hug in a show of support.

"A few steps behind [Cissy] was the pop icon's daughter, Bobbi Kristina, also crying uncontrollably as she was comforted by Houston's close friend, singer Ray J," an eyewitness told the Associated Press.

It was earlier reported that Bobbi had disappeared after the funeral service on Sunday, but was found hours later.

Watch the footage of Ray J's breakdown in the gallery below.

Whitney Houston's funeral in pictures...