NIAMEY  - Niger’s government warned its people on Sunday they could be targeted by roving militias if they travel to Libya, as tensions rise between the neighbouring countries over Niger’s refusal to extradite Muammar Gaddafi’s son Saadi. Two Nigeriens were killed and eleven injured on February 24 in Libya when their vehicle overturned during a car chase in the desert, the latest incident of apparent attacks on Niger immigrants in the country, the government said. “The minister of foreign affairs ... and the minister of public security strongly discourage travel to Libya because of attacks by independent and uncontrolled militias,” according to a foreign ministry statement read over the radio.