An attacker armed with a sword killed four relatives and wounded three others after a family dispute in Hungary on Friday before being arrested by a police anti-terrorist unit, state media reported.

Jutast Csanad Horvath, 24, was detained near the scene of the killings in an area of moorland in the village of Kulcs, around 60 kilometers (40 miles) outside the capital Budapest.

The MTI state news agency quoted police sources as saying Horvath had killed his father, his grandparents and his older brother following a row.

His mother, sister and a close relative were also badly injured in the attack and were now being treated in hospital.