PETALING JAYA: Two students from higher learning institutions who were arrested in connection with the attack on the Ulu Tiram police station in Johor last week were released unconditionally yesterday.

JOHOR BARU: Operational security at all police facilities nationwide are to be stepped up following a pre-dawn attack on the Ulu Tiram police station here today by a man linked to terror group Jemaah Islamiyah (JI) that killed two policemen and injured a third.