NYC shuts off cellphone service in tunnels

Cellphone coverage is notoriously spotty in subways and in tunnels (for obvious reasons), but NYC has pulled the plug on four places underground where the wireless carriers had extended their coverage: the Holland, Lincoln, Midtown,
and Battery tunnels. Why? After last week's bombings in London the the MTA and Port Authority are worried about terrorists using cellphones to remotely detonate bombs in the tunnels and for the immediate future are blocking cellular networks in all four tunnels.

UPDATE: Looks like this was
only temporary. Service should be back to normal this afternoon. [Thanks, StuBee]