Members of the New Zealand Army Band threw gaffer tape at a thief who snatched a bag of instruments before Christchurch's dawn parade this morning.
Band member Lance Corporal Kevin Hickman said he had only walked about 15 metres after setting his gig bag down in Cranmer Square when someone told him it had been taken.
A man on a bike had swiped the bag, which contained a trumpet and two cornets worth about $15,000, and weighed about 15kg.
"I was pretty surprised someone could take off with that,'' he said.
Lance Corporal Hickman said two of the band's sound engineers tried to chase the thief as he rode away. "They threw a roll of gaffer tape at him and hit him but he still managed to escape,'' he said.