Ten Indonesian pirates who hijacked the "Nepline Delima", a Malaysian-owned ship, off Langkawi on June 14, Tuesday pleaded guilty to gang robbery in the Sessions Court here. Judge Ghazali Cha will sentence them on July 10.They were charged under Section 395 of the Penal Code, which provides for a 20 years jail sentence and whipping. The judge ordered all of them, who were unrepresented, to be detained at the Alor Star prison pending sentencing. Deputy Public Prosecutor Azhar Abdul Hamid later told reporters two other Indonesians, who were members of the ship's crew and who were arrested soon after the hijack, would be charged with assisting the pirates.