WASHINGTON D.C.: The US House of Representatives Oversight Committee said it will investigate China's suspected involvement in the recent hacking of Commerce and State department email systems.
Representative James Comer, who chairs the committee, along with the heads of two subcommittees, asked Commerce Secretary Gina Raimondo and Secretary of State Antony Blinken for staff briefings by 9th August.
In their letter to Raimondo, the lawmakers wrote, "We are also concerned that this attack on federal agencies, including the email account of a senior US government official such as yourself, reflects a new level of skill and sophistication from China's hackers."
Microsoft said that earlier this year, a group based in China hacked the emails of Raimondo and other senior US officials.
Amid tensions between Beijing and Washington over various issues, including trade and Taiwan, last month's news that Chinese hackers broke into the emails of senior State and Commerce department officials, caused considerable controversy.
In July, the Wall Street Journal also reported that hackers accessed the email account of Daniel Kritenbrink, the assistant secretary of state for East Asia, as well as the account of the US ambassador to China, stealing hundreds of thousands of emails.
Despite the reported Chinese hacking, Raimondo said she will still visit China later this year.
"We are planning the trip now, which does not mean that we excuse any kind of hacking or infringement on our security," she told CNBC.
In response, the Chinese embassy in Washington said that identifying the source of cyber attacks was complex and warned against "groundless speculations and allegations."