buenos air three argentine judge order key official former president cristina fernandez government detain tuesday part probe allege case fraud request detain former plan minister current lawmaker julio de vido come five days country parliamentary elections fernandez seek senate seat de vido plan minister charge run energy infrastructure project investigation case involve patagonian coal mine rio turbio prosecutors say underproduce despite receive multi-million dollar investments state reuters able reach de vido comment july give interview radio station deny wrongdoing case official rule judge say de vido jail risk flee interfere case imprisonment viable alternative ensure success investigation rule say de vido arrest unless congress agree strip parliamentary immunity past efforts strip lawmakers parliamentary immunity mostly prove futile argentina fernandez govern country 2007 2015 remain main force opposition center-right president mauricio macri poll show come close second ahead oct. 22 senate race argentina large province buenos air behind macri prefer candidate result would still guarantee senate seat immunity arrest see lessen chance make new run presidency 2019. former president time office pepper corruption accusations involve de vido fernandez subject corruption investigations acknowledge likely corruption government deny personal involvement argentina judge seek detention fernandez ally