The European Union will most likely threaten those responsible for the political chaos in Zimbabwe with further and tougher sanctions unless the violence against opposition supporters is halted before the upcoming presidential poll.

A draft statement issued by the European Union’s leaders who recently met in Brussels to discuss the matter, restated that the African country needs to have a peaceful and fair runoff on June 27 between opposition leader Morgan Tsvangirai and the currently serving Robert Mugabe. The draft statement also said that EU was ready "to take additional measures against those responsible for violence".

The country’s Movement for Democratic Change argued that the recent wave of aggression described by them as "a campaign of violence" before the elections has killed nearly 70 of its supporters. However, Mugabe and the Zimbabwe’s ruling party denied the accusations and said they are not responsible for the unrest.

The sanctions already imposed by the EU include an arms embargo, visa bans and freezing of assets against more than a hundred officials including President Mugabe.

The latest wave of violence proved to be quite intimidating for the opposition party. Nelson Chamisa, spokesman for the Movement for Democratic Change, reportedly said that Tsvangirai was considering pulling out of the June 27 poll due to the violence, Reuters reported.

"There is a huge avalanche of calls and pressure from supporters, especially in the rural areas, not to be participants in this charade," Chamisa aid.