Sirens sounding in the North Richland Hills area

The NWS and several other media sources are getting reports of sirens sounding in and around the North Richland Hills area. At this time there is NO storms posing a threat in the area, this appears to be an error. North Richland Hills police asking for citizens not to call 9-1-1 over the sirens sounding. They are contacting the office of emergency management to determine why the sirens are sounding. Once again there are NO storms in the area, and this appears to be an error