A former disability support worker sprayed petrol over a shop attendant and threatened to set him alight during an armed robbery, a court has heard. Police allege Kepa Kemp, 40, separately threatened five people with weapons and robbed them in Melbourne’s west between December 10 and December 27 last year. The alleged armed robberies include threats made against attendants in a tobacco shop, convenience store and pharmacy and a taxi driver. Mr Kemp later told police he was drinking between four and six litres of cask wine each day at the time and also using the drugs cannabis and ice, Melbourne Magistrates Court heard.