At least 25 people are reported to have died and dozens are injured after tornadoes tore through parts of two US states.
Officials in Kentucky said there had been 18 deaths while seven people were killed in Missouri, including five in the city of St Louis.
The Kentucky tornado struck Laurel County in the south-east of the state in the early hours of Saturday. Officials said they expected the death toll to rise.
Missouri officials said 5,000 buildings had been damaged, roofs destroyed and power lines downed due to the tornado.
About 140,000 properties in Missouri and Kentucky were left without power as of Saturday afternoon. Officials in St Louis said the fire department was conducting house-by-house searches in the worst-affected areas.
St Louis mayor Cara Spencer said in an update on Saturday that at least 38 people were reported injured in her area, largely from collapsed buildings and toppled trees.
Authorities in Kentucky said there were also severe injuries reported. “The search is continuing in the damaged area for survivors,” said Laurel County Sheriff John Root in a post on social media.
National Weather Service radar suggested the tornado touched down in Missouri shortly after 14:30 local time in the west of the city close to Forest Park – home to St Louis Zoo and the site of the 1904 Olympic Games.
St Louis Fire Department said three people had to be rescued after part of the nearby Centennial Christian Church collapsed. One of those people died.
A curfew was imposed from 21:00 to 06:00 local time in the two areas where most of the damage took place, to prevent injuries from debris and reduce the potential for looting.
St Louis mayor Spencer said: “The loss of life and the destruction is truly, truly horrendous.
“We’re going to have a lot of work to do in the coming days. There is no doubt there, but tonight we are focused on saving lives and keeping people safe and allowing our community to grieve.”
The US National Weather Service said tornadoes also hit neighbouring Illinois, with more severe weather conditions stretching eastwards to the Atlantic coast. On Saturday, it warned of few tornadoes that could hit northern Texas over the weekend as a result of strong to severe storms in the area.
The tornadoes struck an area of the US that is generally referred to as “Tornado Alley”, where tornadoes are most frequent. They typically occur in the months of May and June, though they could strike during other times of the year.
Kentucky has seen an average of five tornadoes each May since the year 2000, while Missouri has seen an average of 16.
