Two guards were killed in an attempted attack on an oilfield in eastern Libya by suspected Islamic State militants on Saturday, a guards’ spokesman said. Ali al-Hassi said guards had repelled the attack on Bayda field, about 250 km south of the major oil terminals of Es Sider and Ras Lanuf, Reuters reported. A security official from the nearby town of Maradah said the militants were in a convoy of about 10 vehicles.