Oscar winner Spike Lee has paid tribute to actor Thomas Jefferson Byrd, who has been shot and killed in the US.

Writing on Instagram, Lee called the actor his "beloved brother", adding: "Tom is my guy."

The 70-year-old had starred in many of Lee's films, including Clockers, Bamboozled and Chi-Raq.

Police were called to Belvedere Avenue, south west Atlanta, on Saturday, where Byrd was found with multiple gunshot wounds to the back.

He was identified and pronounced dead by the emergency services, Atlanta police spokesman Officer Anthony Grant told US media.

Police are working to determine the circumstances, said Mr Grant. Lee described Byrd's death as a "tragic murder" on his Instagram account.

Viola Davis, who had also worked alongside Byrd, also tweeted her shock at the news.

Jack Ryan and The Wire star Wendell Pierce also paid tribute.

Byrd's appearances in other Spike Lee movies include Get on the Bus, Red Hook Summer, Girl 6, Da Sweet Blood of Jesus and He Got Game, opposite Denzel Washington and Milla Jovavich.

Lee and Byrd first collaborated on 1995 film Clockers - and the director shared two Instagram clips featuring Byrd, who played a violent enforcer called Eric Byrne.

The actor also appeared in Jamie Foxx's Ray Charles biopic Ray.

His theatre work also earned him a Tony nomination in 2003 for Ma Rainey's Black Bottom, in which he starred opposite Whoopi Goldberg.

"May we all wish condolences and blessings to his family," Lee said.