At least 13 people were killed and several others injured after a duck boat carrying tourists capsized Thursday night on Table Rock Lake in Branson, Missouri, according to authorities. >> Read more trending news Update 10:05 a.m. EDT July 20: Authorities are expected to provide an update on the investigation into Thursday's deadly duck boat accident in Missouri at a news conference Friday. Update 9:55 a.m. EDT July 20: President Donald Trump shared sympathies Friday to the families and friends of the people involved in Thursday’s deadly duck boat accident in southwest Missouri. “Such a tragedy, such a great loss,” the president wrote Friday in a tweet. “May God be with you all!” Update 8:15 a.m. EDT July 20: Officials with the State Highway Patrol said Friday that two more bodies have been found after Thursday’s duck boat accident in southwest Missouri, bringing the death toll to 13. >> On AJC.com: Bahamas boating tragedy brings vacation safety to the forefront State Highway Patrol Sgt. Jason Pace said four other people remained missing. Original report: Stone County Sheriff Doug Rader said 14 people were taken to hospitals after the incident. Seven were being treated early Friday, he said. The boat capsized after a strong line of thunderstorms moved through the area around 7 p.m. Thursday. Rader said weather “was a factor” in the incident. Authorities said the boat had 31 people on board, including children, when it capsized. The boat had life jackets on board, according to CNN. The news network reported that other boats on the water docked before the bad weather hit. The National Transportation Safety Board has sent a team to investigate and are asking anyone who witnessed the accident to come forward. A dive team and rescue officials worked through the night to find survivors. They ended the search around 11 p.m., according to KY3. Emergency responders set up a staging area overnight on the lakeshore near the Showboat Branson Belle, local media reported, although the Belle was not involved in the accident. Branson officials opened an emergency shelter inside city hall for the victims. National Weather Service meteorologist Steve Linderberg said a top wind speed of 63 mph was measured around 7 p.m. Thursday at Branson Airport. “There’s nothing to slow down winds in an open area,” he said. Missouri Gov. Mike Parson is watching the developments. DUKW, known as duck boats, are six-wheel-drive amphibious vehicles that were used by the U.S. military during World War II and the Korean War. Since then, duck boat tours have become popular and are offered on lakes and rivers around the United States, including Missouri, Wisconsin, Massachusetts and Alabama. Ripley Entertainment acquired the Ride The Ducks in Branson in late 2017 from Ride the Ducks International, a subsidiary of Norcross, Georgia-based Herschend Family Entertainment Corp. Ride the Ducks International manufactures amphibious vehicles and licenses them for tours at affiliates. It also operates duck tours at Stone Mountain Park in Georgia. The company formerly operated tours in several other cities, including Baltimore, San Francisco and Philadelphia. But in recent years it ended operations following deadly accidents. In 2015, a Ride the Ducks tour bus collided with a charter bus carrying student on the Aurora bridge in Seattle. Four students were killed and several others injured. The Associated Press and The Atlanta Journal-Constitution contributed to this report.