Insurgents set up a fake checkpoint near Baquba, the provincial capital, and raked a bus with gunfire, killing three.
For one of his first performance art installations, in 2009, Mojadidi set up a fake checkpoint in Kabul.
And in Khalis, militants used a fake checkpoint to abduct 10 people.
At a fake checkpoint run by insurgents, a man in a police uniform, in a moment of mercy, told him to flee.
Just outside the town of Mandali, the men ran into the fake checkpoint.
Sheik Zubeidi was assassinated when he was stopped at a fake checkpoint, a local hospital official said.
The fake checkpoint is very popular with tourists who have their photographs taken in front of it.
They said the soldiers were on patrol, driving toward Anbar Province, when the gunmen attacked, possibly after setting up a fake checkpoint.
On 5 February, the son of a Zawiya congressman was kidnapped with two friends on a fake checkpoint near the western town.