NEW : Some U.S. lawmakers are concerned 9/11 victims may have had their phones hacked . Comment: The concerns appear linked to a tabloid report . Three senators , a congressman ask Justice Department to investigate `` They have to keep books and records in reasonable detail that reflect the transactions , '' he said . News Corp. A fourth senator tells CNN he may launch his own investigation .
NEW : Some U.S. lawmakers are concerned 9/11 victims may have had their phones hacked . Comment: The concerns appear 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 .