direct to your inboxA mental health patient caused 'terror' in the Arndale centre after stabbing a Nando's waitress then claiming he'd planted bombs in the toilets.Ali Algdaner, 27, who suffers from paranoid schizophrenia, had been allowed to leave a mental health unit at Salford Royal Hospital before heading to the shopping centre.Armed police raced to the Arndale, and after they detained him Algdaner said: "It's a terrorist plot, I've done a terrorist attack."Algdaner said he had planted a number of bombs in the shopping centre's toilets, but no such devices were found.The 20-year-old waitress suffered minor injuries but was left 'traumatised'.Get the latest updates from across Greater Manchester direct to your inbox with the free MEN.