U.S. Charge d'affaires Clark Price said he was sorry to hear that Seryozha Avetisyan, the sole member of the Avetisyan family to survive the January 12 tragedy, died on Monday.

“So very sorry to hear that Seryozha Avetisyan of avetisyanfamily has passed away,” he tweeted.

As reported earlier, six-month-old Seryozha Avetisyan died on Monday. Other six members of his family were killed last week. Valery Permyakov, a serviceman of the 102nd Russian Military Base in the city, stands accused in this crime.

The soldier is charged under Russian law, with “the murder of more than two people,” and “desertion with a service weapon.” The Investigative Committee of Armenia also has launched a criminal case on the murders.