Roulston pulls out of Tour of Southland

Three-time defending champion Hayden Roulston has pulled out of the Tour of Southland.

Roulston has climbed into his Colour Plus team van late in stage two from Invercargill to Bluff Hill.

It is not yet known why he has withdrawn, but there was a crash involving 40 riders.

Marc Ryan holds the leader's yellow jersey after his Colour Plus team won the opening stage in Invercargill.