Michigan has joined Minnesota in reporting cyberattacks on water systems but an official said all were operating “safely.” Earlier this week, authorities said cyberattacks targeted over 30 water systems in Minnesota. The source of the attacks is being investigated, but they came amid warnings that Iranian hackers have been focused on such systems. Minnesota IT Services said Thursday that the investigation into the attacks that happened on Sunday and Monday was continuing, and that state officials had not identified who was behind them. There were no reports that residents had been impacted by the attacks. Read moreFBI investigates as Michigan joins Minnesota in reporting cyberattacks on its water systems

“Today” show host Savannah Guthrie said her family was “desperate” and “begging for help" in the disappearance of her mother. The emotional plea Saturday on her Instagram account came a day after authorities released an early ransom note in the investigation into the disappearance of Nancy Guthrie. A second note that was also released Friday said Guthrie died shortly after she was kidnapped and “is buried in nature now.” Both notes initially were sent to a Tucson television station days after Guthrie's 84-year-old mother, Nancy Guthrie, went missing from her home outside Tucson on Feb. 1. Authorities have not said whether Nancy Guthrie is still alive. Read more'Today' show host Savannah Guthrie begs for 'someone to come forward' in her mother's disappearance

Authorities have released an early ransom note in the investigation into the disappearance of Nancy Guthrie in hopes that someone will recognize the writing style. A second note that was also released Friday said Guthrie died shortly after she was kidnapped and “is buried in nature now.” Both notes initially were sent to a Tucson television station days after the 84-year-old mother of “Today” show host Savannah Guthrie went missing from her home outside Tucson on Feb. 1. Authorities have not said whether Nancy Guthrie is still alive. The Pima County Sheriff’s Department said “we believe these distinctive linguistic characteristics may be recognizable to someone who knows or has interacted with the notes’ writer.” Read moreAuthorities release early ransom note in Nancy Guthrie case, hoping someone recognizes it