The human bones found at a construction site at Place Guillaume II in Luxembourg city on Tuesday have been there for a longer period of time, representing an archaeological discovery, a police spokesman said on Thursday morning.
The discovery came as little surprise to authorities, as human remains from medieval times are often found in this area.
As recent as October 2016, construction workers found a human skeleton at Place Guillaume II.
In the mid-13th century, a Franciscan monastery and a church were located there. When they were destroyed by a fire, a new monastery and a new church were built in the 17th century.
Graveyards were surrounding the church and monastery, explaining why human remains can be found there regularly.