TSA announces new security measure at oversees airports

The U.S. Transportation Security Administration announced on Sunday that cellphones or other electronic devices will not be permitted on U.S.-bound planes from some overseas airports if they are not charged.

The initiative is part of a broader TSA effort unveiled last week to increase security amid concerns that the Yemen-based al-Qaeda in the Arabian Peninsula and al-Qaeda's affiliate in Syria, the Islamist Nusra Front, are planning to attack an airliner, Reuters reports.

Security agents may ask travelers to activate their electronic devices at checkpoints under the new measure. If the devices do not have power, they will not be allowed on planes.

Laptop computers may be among the devices TSA agents will ask passengers to turn on. U.S. officials also singled out smartphones, including Apple's iPhone and Samsung's Galaxy, for extra security checks on U.S.-bound direct flights from Europe, the Middle East and Africa, according to Reuters.

The new efforts stem from concerns from U.S. officials that cellphones, tablet computers, laptops or other electronic devices could be used as bombs, Reuters reports.

The TSA also called for stepped up checks of passengers' shoes as part of its new effort, according to Reuters.