Japanese car giant Toyota has recalled more than one million hybrid cars globally, due to some technical challenges.

According to the company, 1.03 million vehicles built between June 2015 and May 2018 will be recalled for safety checks as the problem in the worst case could cause a fire in the vehicles.

“The electrical wiring… could short circuit and generate heat as it wears down due to vibrations during driving,” the company said in a recall document submitted to the transport ministry.

“In the worst case, this could lead to a fire in the vehicle,” it added.

The affected models include Prius, Prius PHV and C-HR.

Out of the 1.03 million affected cars, 554,000 are in Japan, 217,000 in North America and 219,000 in Europe.

A spokesperson for Toyota Japan said she had no knowledge of any injuries occurring in Japan as a result of the possible defect.

“It is difficult to know if and how many times exactly such an incident has occurred,” she said.

Toyota is recorded to have sold more than 10 million hybrid gasoline-electric vehicles globally, including the Prius, since 1997.

In 2016, Toyota announced the recall of 3.37 million vehicles globally over problems with air bags and a fuel emission control unit.

The biggest recall ever for the Prius was in February 2014, where 1.9 million vehicles were involved.