LAHORE - Pakistani police and supporters of former prime minister Imran Khan clashed on Tuesday ahead of his possible arrest outside his home in the eastern city of Lahore, a government spokesman and witnesses said.

A couple of hundred Khan supporters gathered outside the house after a police team arrived from Islamabad to arrest him on a court order, government spokesman Amir Mir told Reuters.

Khan's Pakistan Tehreek-e-Insaf (PTI) workers started the violence, which injured several police officials, he said, adding, "If Imran Khan ensures his presence in the court, it will be good, otherwise the law will take its course."

Similar clashes took places last week.

"We have come here just for the compliance of the court order," deputy inspector general of police Syed Shahzad Nadeem told reporters.

The workers started pelting the police with stones and bricks, and in response police directed water-cannon at them and in some cases baton charged them, he said.

Live TV footage showed the supporters also using sling-shots and attacking the police with bricks and sticks.

The court in Islamabad had issued the arrest warrants in a case against Khan on charges of threatening a judge in one of his speeches last year.

The former premier has been embroiled in several court cases since his ousting early last year in a parliament vote of confidence.

He has been demanding snap polls in protest rallies across the country, a move his successor Shehbaz Sharif has rejected, saying the elections would be held as scheduled later this year.

Khan was also shot and wounded in one of these rallies.

(Writing by Asif Shahzad, Editing by William Maclean)