KUALA LUMPUR, Malaysia (AP) The investigation into terror groups in Southeast Asia widened Saturday as Malaysia announced the arrests of two more suspected militants tied to al-Qaida and linked Malaysian extremists to a cell in Singapore that plotted to bomb Western embassies. The government of Singapore said Saturday that more al-Qaida members were likely still at large, even after the arrest of 30 suspected militants so far in the city-state and neighboring Malaysia. Malaysian officials on Saturday said two men had been arrested in the past few days for alleged membership of an Islamic militant group called the Kumpulan Mujahiddin Malaysia.