NEW : Some U.S. lawmakers are concerned that victims may have had their phones hacked . Were other employees -- all over the world , for that matter -- making similar payments ? CNN : The attacks are linked to a tabloid report . Three senators , a congressman ask Justice Department to investigate News Corp. A fourth senator tells CNN he may launch his own investigation .
NEW : Some U.S. lawmakers are concerned that victims may have had their phones hacked . CNN : The attacks are linked to a tabloid report . Three senators , a congressman ask Justice Department to investigate News Corp. A fourth senator tells CNN he may launch his own investigation .