A Latvian general cargoship has run hard aground off Sweden.

The Swedish coast guard said a 65-metre vessel got stuck on Sunday morning north of Kallandso.

No injuries or pollution were reported.

AIS data shows the 1,500-dwt Bonita (built 1987) still aground on Monday morning.

A preliminary investigation into negligence in maritime traffic has begun, the coast guard said.

It is still unclear what caused the accident, it added. The vessel is loaded with feed.

The environmental protection vessel KBV 051 is in place at the casualty along with an inspector from the Swedish Transport Agency.

"The overall assessment right now is that the casualty is hard on the ground," said coast guard rescue leader Mattias Heneborn.

Divers from the coast guard were en route to inspect the hull.

The vessel is listed as operated by AA Bon-Port of Latvia.