Sweden’s Ericsson revealed seven of its employees have been summoned by authorities in Greece over allegations of possible corruption regarding a defence deal struck in 1999.

In a statement, Ericsson said seven current and former employees, which remain unnamed, are part of an investigation by Greek prosecutors involving an agreement in which its former subsidiary, Ericsson Microwave Systems, delivered an airborne radar system to Greece.

Ericsson first disclosed the probe two years, adding that it is one of many investigations conducted by authorities regarding arms deals in the Greek defence sector.

Ericsson sold the subsidiary in question to Saab in 2006, and confirmed that it hasn’t been directly contacted by any authority regarding the situation.

The employees under investigation also “have not yet been provided with the full relevant documentation from the investigation”, or been subject to questioning.

News of the Greek probe comes after the Swedish vendor confirmed late last week it was also being questioned by US authorities over corruption allegations, which is reportedly related to its infrastructure business in China.

Ericsson said on Friday it has been cooperating with US authorities since March 2013, after it was requested to provide information relating to its business. It is unknown whether the two probes are related.

The company said in today’s statement it will “continue to follow the case closely and will cooperate with authorities, as appropriate”.