From Voice of America:

The U.S. homeland security chief says investigators have collected “strong evidence” leading to a prime suspect in the massive cybersecurity breach of government records that compromised personal information about millions of federal workers and people applying for national security clearances. Homeland Security Secretary Jeh Johnson said Wednesday the government is not ready to officially disclose who it thinks was behind the attack on its computers earlier this year, although Director of National Intelligence James Clapper, has said Chinese state interests are “the leading suspect.”