According to a PCWorld translation of the video report (below), the group used a crossbow to shoot a 300-foot zip line from a building on the Shenzhen province side of the river separating the People’s Republic of China from Hong Kong. They then attached their cache of Apple goods to the line and were hauling them up with some kind of pulley system when they were spotted by a police surveillance operation.
The value of the cache was set by Chinese police at roughly US$46,583,
Video report from Chinese TV station