A man accused of stealing a purse from Homeland Security Secretary Kristi Noem has been charged in federal court with aggravated identity theft, robbery and fraud.

A suspect has been arrested in connection with the theft of U.S. Homeland Security Secretary Kristi Noem's purse at a Washington restaurant, the Secret Service said on Sunday, and Noem said the individual has been living in the United States illegally.

Secretary of Homeland Security Kristi Noem spoke to attendees Tuesday at the RSAC conference where she said the nation faces a growing threat from cyberattacks.