... conversation with a man claiming be a representative from SimplexGrinnel, installer of the hotel's fire sprinklers. The bogus ... persona as "dex," tells a man that he is calling from SimplexGrinnel and walks him through a process similar to the one described ...

... resident Tariq Malik. In June, an employee at a Conway hotel received a call from a man claiming to be a representative from SimplexGrinnel, the installer of the hotelâ s fire sprinklers. The caller told the employee there was a problem with the sprinklers ...