National prosecutors have released some details about four Dutch citizens arrested on suspicion of involvement in cyber attacks as part of the loosely-knit hackers group known as "Anonymous."
U.S. authorities announced 14 arrests late Tuesday and said they cooperated with British and Dutch authorities.
On Wednesday, Dutch prosecutors said the four Dutch suspects are thought to have belonged to a splinter group called AntiSec NL, which hacked the sites of dating service Pepper.nl and communications software maker Nimbuzz, among others.
They were identified as males aged 17, 18, 25 and 35, each from a different Dutch city, and operating under the nicknames Ziaolin, Calimero, DutchD3V1L and Time. Police seized their computers in raids.