ATHENS, March 26 -- A 22-year-old Chinese national and her four-month old baby boy were found dead at the northern Greece city of Serres (about 570 km north east of Athens) early Wednesday morning, according to a local police announcement.

The bodies of the victims were discovered by a neighbor at the yard of the block of flats she had been living for the past four years with her husband and their two children; the baby and their three year old daughter.

The circumstances of the tragedy have not been clarified yet, but it seems that the mother and child fell from the building's terrace, police sources told Xinhua.

According to investigators, the mother was suffering from postnatal depression and most likely committed suicide.

The victim's husband, a 22-year old Chinese national, who was asleep at the time of the incident, as he told the police, is currently giving testimony.