U.S. government agencies that have been probing banks' hiring of the children of powerful Chinese officials are expanding existing investigations in other industries across Asia to include hiring practices, four people familiar with the matter said.

The Justice Department and the Securities and Exchange Commission have been asking global companies in a range of industries including oil and gas, telecommunications and consumer products for information about their hiring practices to determine if they could amount to bribery, they said.

On Wednesday, mobile chipmaker Qualcomm Inc. said it could face a civil action from U.S. authorities over alleged bribery of officials associated with state-owned companies in China. It also said it found instances in which "special hiring consideration" was given to people associated with state-owned companies or agencies in China.