Three buses have exploded in Bat Yam, south of Tel Aviv, in what Israeli police say is a "suspected terror attack".

Devices in two other buses failed to explode, they said, adding that "large police forces are at the scenes, searching for suspects".

Transport minister Miri Regev called a halt to all buses, trains and light rail trains in the country while checks for explosive devices were carried out.

Footage on social media shows at least one bus on fire in a parking lot, with a large plume of smoke rising above.

There have been no reports of casualties at this stage, police said.

Authorities are urging the public to avoid the areas and remain alert for suspicious items.

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