DETROIT (WKZO) -- A bomb threat at the Ambassador Bridge in Detroit Wednesday morning turned out to be a false alarm.

Detroit Police say they received a call around 7:20 a.m. that explosives had been placed at the international crossing.  A thorough investigation found no explosives and the area was given the "all clear" around 9:30 a.m.

Police are not sure if this call was associated with bomb threats reported earlier this year at the bridge, the Detroit Windsor Tunnel and Comerica Park.