Channel 4 News foreign affairs correspondent Jonathan Miller and his team have been arrested while reporting from Bahrain.
The news crew are believed to be unharmed, but concerns were raised about the welfare of their local driver.
He was arrested and assaulted in front of the team, and appeared to be bleeding from cuts to his arms.
A Channel 4 News spokesman said: "Our primary concern is for the safety of the team, and we are working with the appropriate authorities to secure a swift release.
"We are also working hard to establish the whereabouts of the driver who was assaulted and separated from the group."
Demonstrators hurled petrol bombs during nightly clashes with the police who responded by firing teargas and rubber bullets.
Crowds of protesters hurled petrol bombs at police who fired tear gas back in Bahrain on Saturday on the eve of the Grand Prix.
Protesters have clashed with police in Bahrain as F1 bosses remained defiant and the country's leaders refused to "empower extremists."