From Politico:

The Transportation Security Administration has called an abrupt halt to its new policy allowing pocket knives on board planes, following a month and a half of criticism from lawmakers and flight attendants.

The policy, which had been set to take place this Thursday, drew renewed scrutiny following last week’s bombings in Boston. But TSA Administrator John Pistole offered no specific reason for the delay, which he announced in an email to employees Monday. It also wasn’t clear how long the delay will last.