NEW YORK (Reuters) — A Somali teenager extradited to New York last year on charges he attempted to hijack a US ship in the Indian Ocean was indicted for his alleged involvement in two additional attacks.

Abduwali Abdukhadir Muse, the sole surviving accused pirate from the foiled bid to hijack US container ship Maersk Alabama in April 2009, was due to be arraigned on the new charges in Manhattan federal court.

Muse pleaded not guilty to the original charges of piracy, conspiracy to seize a ship by force, conspiracy to commit hostage taking and related firearms offences.