'Mass casualty' event declared after tornado plows through trailer park in Ohio - trapping dozens in the wreckage

A mass casualty event has been declared after a tornado plowed through a trailer park in Ohio, leaving people under the wreckage. 

The occupants of Lakeside RV Park, in Lakeview, Ohio, were hit by a tornado on Thursday evening.

Images of the site has since emerged on social media showing the park left completely devastated. 

What is left of campervans is seen twisted and broken at the side of the road, alongside ripped down trees. 

The occupants of Lakeside RV Park, in Lakeview, Ohio, were hit by a tornado on Thursday evening

Images of the site has since emerged on social media showing the park left completely devastated

What is left of campervans is seen twisted and broken at the side of the road, alongside ripped down trees

The park has space for a total of 343 campers, with it remaining unclear just how many people have been impacted by the storm. 

One local journalist has reported that the storm has caused a mass casualty incident at the park, with people trapped under the remnants of their vans. 

A Logan County public safety message read: '[FR/Mass Casualty Incident] Multiple building collapses with people trapped in Russells Point after tornado. 

'Gas leaks, accidents, fires, and power lines down all around Indian Lake. Triage collection point set up.'  

Earlier on Thursday, warnings had been issued for multiple counties in Ohio, with it effecting five counties. 

The National Weather Service warned that there was a 'very dangerous' half mile wide Tornado on the ground and it was damaging homes and structures. 

The service said that the storm was 'very serious' and labelled the tornado as being dangerous. 

In neighboring Indiana, three people died after severe weather also struck a trailer park in Winchester, state police said. 

The National Weather Service warned that there was a 'very dangerous' half mile wide Tornado on the ground and it was damaging homes and structures

The service said that the storm was 'very serious' and labelled the tornado as being dangerous

No more details were available immediately from the state police, who only confirmed the deaths in the park on North Cash Drive. 

Winchester's government announced on social media that a tornado was on the ground and moving at 40mph. 

The Randolph County Sheriff's Office said on social media that there was 'heavy storm damage' and urged people to avoid the Winchester area.

According to the weather service, more than 13 million people in the country were under tornado watches.