Hotel / Restaurant, Restaurant Nashua, NH – Grease fire at café controlled by sprinkler system February 7, 2017 viking210 A Nashua cafe is set to reopen Friday after a fire this week. On Tuesday, a coffee roaster caught fire at the Riverwalk Cafe & Music Bar, fire officials said. No one was hurt. The restaurant remained closed Thursday for cleanup. It will reopen Friday at 6 a.m., according to the owners. The fire broke at about 11:45 a.m. Tuesday, triggering an overheard sprinkler that contained the flames, according to Nashua Deputy fire Chief Karl Gerhard. Workers used portable fire extinguishers, furthering containing the fire.