An 18-year-old who was arrested as part of a police investigation into computer hacking by the online groups Anonymous and LulzSec has been charged with hacking into systems, assisting offences, and conspiracy to carry out attacks on the website of the Serious Organised Crime Agency (Soca).

Jake Davis was due to appear in custody at City of Westminster magistrates court on Monday. He is understood to have been arrested last Wednesday in Yell, a northerly island in the Shetland Islands.

He is the third Briton to have been arrested as part of an ongoing investigation into a series of attacks by LulzSec, a hacking group which spun out of the larger Anonymous collective in May 2011. LulzSec has claimed responsibility for attacking a number of state and non-state organisations, including the Soca website, the US congress and websites owned by News International.

Davis, who was brought to London for questioning, is charged with: unauthorised access to a computer system; encouraging/assisting offences contrary to section 46 of the Serious Crime Act 2007; conspiracy with others to carry out a distributed denial of service attack on Soca's website; conspiracy to commit offences under section 3 of the Computer Misuse Act 1990; and conspiracy between the defendant and others to commit offences under section 3 of the Computer Misuse Act 1990 contrary to section 1 of the Criminal Law Act 1977.