A number of European Union bodies including the European Commission were targeted in a cyber attack last week, Bloomberg reported.

According to EU officials, some of the EU institutions “experienced an IT security incident in their IT infrastructure,” though no major information breach has been detected. The nature and the scope of the cyber attack have not been disclosed as forensic analysis of the incident is still in its initial phase.

“We are working closely with CERT-EU, the Computer Emergency Response Team for all EU institutions, bodies and agencies and the vendor of the affected IT solution,” the spokesperson said. “Thus far, no major information breach was detected.”

EU officials familiar with the matter told Bloomberg that the incident was deemed “serious enough for senior officials at the commission to be alerted” and that “the incident was bigger than usual attacks that regularly hit the EU.” According to sources, staff working for EU bodies had been recently warned of potential phishing attempts.