Moscow - Two American citizens were killed in the truck attack in Nice, which has left at least 84 people dead, the US State Department spokesperson said on Friday."At this time, we are aware of and can confirm two US citizens were killed in the attack in Nice on July 14 2016," spokesperson John Kirby said."We express our sincere condolences to the family and friends of those killed."The statement was issued as US Secretary of State John Kerry was in Moscow for talks on Syria with his Russian counterpart.Kirby did not identify the two dead but added the US was providing "all possible consular assistance" to its citizens.READ: France has been hit in its soulA Texas-based newspaper, the Austin American-Statesman, reported that 51-year-old Sean Copeland and his 11-year-old son Brodie were among those killed in Nice, citing their friends and relatives.A gunman drove a 19-ton truck into a crowd of people celebrating Bastille Day on Thursday night in the French Riviera city of Nice in what authorities have called a "terrorist" attack.Kirby's announcement came after US President Barack Obama strongly condemned what he said was a "horrific terrorist attack" and said the US stood "in solidarity and partnership with France"."Our embassy in Paris is making every effort to account for the welfare of US citizens in Nice," Kirby said."Any US citizens in Nice should contact friends and family directly to inform them of their well-being."