Finland’s Prime Minister Sanna Marin apologized on Tuesday for a party photo taken at a celebration at her official residence after a rock festival. “The picture is inappropriate and it shouldn’t have been taken,” said the 36-year-old at a press conference with President Sauli Niinistö in Helsinki.

The photo shows two other women kissing on the mouth and covering their bare breasts with a sign that reads “Finland”.

Marin hit the headlines last week with videos of a private party showing her dancing and singing with friends. One of the videos fueled rumors that drugs might have been involved.

The Prime Minister rejected all allegations, but underwent a drug test. This was negative on Monday.

Marin previously offered to do the test. She repeatedly claimed that she had never taken drugs in her life. At the celebrations, she only drank alcohol.