An EU diplomat told EurActiv Germany that the objectives of possible sanctions would be threefold: freeing political prisoners, strengthening civil society in Belarus and punishing those who were involved in the attack.
The source argued that what was now needed was an "unambiguous" signal and EU diplomats were mulling possible concrete steps that could be taken. One option would be to renew visa restrictions against Lukashenko and his team.
According to the source, EU leaders have so far pursued very approaches to the issue. Nevertheless, the EU's 27 foreign ministers will have to agree upon a common position by 31 January at the latest, during their Foreign Affairs Council.
One of the countries likely to oppose sanctions is Italy, which has very close ties to Belarus. Lukashenko even paid a visit to Italian Prime Minister Silvio Berlusconi and the Pope in April 2009.
Belarusian Ambassador to Germany Andrei Giro told EurActiv.de in an interview that since 1986 Rome and Minsk had enjoyed a special relationship.
Although Italy is reportedly least in favour of sanctions, other countries are also divided over how severely the bloc should react.
Carrot and stick
Speaking to German press agency DPA, Lithuanian President Dalia Grybauskaite called for an easing of EU travel restrictions for ordinary Belarusian citizens in order to "explore new ways of communicating with Belarus".
Lithuanian Foreign Minister Audronius Azubalis reportedly said that "whatever decisions the European Union may make with regard to its future relations with Minsk, we'll do everything for civil society to continue to develop and strengthen".
The Dutch approach, meanwhile, is much tougher. Dutch Christian Democrat MPs, for example, protested to EU foreign affairs chief Catherine Ashton about a planned visit by Belarusian Foreign Minister Sergei Martynov to Brussels.
The visit, said to have been scheduled for yesterday (10 January), should be postponed, they said, until a common EU position has been established.
Ashton's office today (11 January) denied that such a meeting had been scheduled in the first place.
Diplomatic working committees of the 27 member states are currently debating the issue of whether and how to widen sanctions.