Budapest - A group calling itself the Hungarian Arrows National Liberation Army on Sunday claimed it had carried out several petrol bomb attacks on the homes of MPs of the ruling Hungarian Socialist Party. Petrol bombs were thrown at the homes of four junior MPs in the early hours of Friday morning, causing some damage but no injuries.
The group claimed responsibility in an email sent to right-wing news channel Hir TV, and included a photograph that showed a Molotov cocktail burning in the yard of a home.
The email also included a message saying: "The flames of Friday's dawn should remind traitors where the 'no' button is."
MPs are due Monday to carry out a final vote on an unpopular new healthcare bill that will introduce private capital into the health insurance system.
The group first became known in December, when it said it had brutally beaten Hir TV anchor Sandor Csintalan for supposedly being a "Jewish hireling."
Right-wing groups have increased their activities in Hungary since the September 2006 leak of a tape on which Prime Minister Ferenc Gyurscany admitted lying about the economy.
The leak prompted riots and long-term protests from the right.
Since then, extreme-right party Jobbik has formed a uniformed group, the Hungarian Guard, which Jewish groups have condemned for wearing uniforms they say are similar to those worn by fascists.
Hungary's Roma minority is also nervous about the group, which uses a historic Hungarian standard linked to the Nazi-aligned Arrow Cross party briefly in party during World War Two.
The Hungarian Guard has staged regular demonstrations against "Gypsy crime," including a uniformed march through a Roma-majority village.