UK wants authority to serve warrants in U.S.

The talks are aimed at allowing British authorities access to a range of data, from interceptions of live communications to archived emails involving British suspects, according to the officials, who are not authorized to comment publicly.

The negotiations were first reported Thursday by the Washington Post.

Under the proposed plan, British authorities would not have access to records of U.S. citizens if they emerged in the British investigations.

Congressional approval would be required of any deal negotiated by the two countries.