U.S. senators from both parties on Tuesday asked Energy Secretary Rick Perry for details about recent approvals for companies to share nuclear energy information with Saudi Arabia, with the lawmakers expressing concern about possible development of atomic weapons.

Saudi Arabia has engaged in "many deeply troubling actions and statements that have provoked alarm in Congress," Sens. Bob Menendez, a Democrat, and Marco Rubio, a Republican, told Perry in a letter, a copy of which was seen by Reuters.

The senators said Congress was beginning to reevaluate the U.S.-Saudi relationship, and they believe Washington should not be providing nuclear technology or information to Saudi Arabia now.