Police say they have arrested three teenagers over a series of robberies at convenience stores across the New Territories.
Cash and goods amounting to tens of thousands of dollars were taken in eight attacks on shops in Tuen Mun, Sheung Shui, Kwai Chung, Yuen Long, Tin Shui Wai and Tsuen Wan between February 3 and February 19.
Officers said the robbers mainly targeted stores that were open 24 hours, threatening staff to make them hand over cash.
"The robbers usually went alone, or with one or two companions. They wore caps and masks to hide their identities. They usually went in when customers had left the store, and threatened staff with weapons not to call the police or make any noise," said chief inspector Kwan Chun-hin.
"In the eight robberies, they brandished knives for cutting meat, vegetables and fruit, cutters and hammers. They demanded the staff hand over all the cash. They also snatched the cash and cigarettes from behind the staff. Each robbery lasted for about a minute."
Kwan said three people aged between 17 and 19 were arrested during raids on a number of properties and they were being detained for questioning.