Venezuela official says there has been a "terrorist attack" at a military base and several arrests have been made.

Venezuela's Socialist Party deputy Diosdado Cabello said Sunday that an "irregular situation" he had earlier qualified as a "terrorist attack" in the city of Valencia had been controlled.

Earlier on Sunday, an online video showed a group of men in military uniforms saying they were launching an uprising against unpopular leftist President Nicolas Maduro. Witnesses said they heard gunshots through the night.