The Detroit-Windsor Tunnel has reopened after a bomb threat phoned in to Canadian authorities led to the closing of the international crossing for several hours Thursday afternoon.
Cars began entering the tunnel at the U.S. end about 4:30 p.m., and tunnel chief executive Neal Belitsky says traffic resumed from the Canadian end soon after.
Belitsky says nothing was found in searches by video, bomb-sniffing dog and bomb squad personnel.
The bomb threat was made some time after 12:30 p.m. to the duty free shop on a plaza on the tunnel's Windsor side.
Initially, traffic going onto plazas on both sides of the tunnel was halted and diverted from the tunnel.
The underwater tunnel stretches about a mile beneath the Detroit River, which is one of North America's busiest trade crossings.