MADRID (AP) – Spain’s National Police on Friday gave details on four people killed when a building housing a bar and restaurant club collapsed on the island of Mallorca.

Police said two German women, aged 20 and 30, died, along with a 33-year-old Spanish woman and a 44-year-old Senegalese man. The Spanish woman worked in the club, they said.

Palma de Mallorca Mayor Jaime Martínez and firefighter department spokesman Eder García told reporters that excess weight on a first-floor terrace may have caused the collapse Thursday.

Sixteen people were injured and five were said to be in serious condition. They were being treated at local hospitals. There were no immediately details on their nationalities.

EDITORS NOTE: Graphic content / Tourists pass by as Police officers investigate one day after a two-storey club-restaurant collapsed, killing four and injuring 16 people on Playa de Palma, south of the Spanish Mediterranean island’s capital Palma de Mallorca, on May 24, 2024. Four people died – two German women, aged 20 and 30, a 44-year-old Senegalese man and a 23-year-old Spanish woman who worked at the venue – and 16 were injured after the roof of a two-storey club-restaurant collapsed on Spain’s Mediterranean island of Mallorca on May 23, 2024, AFP reported. (Photo by Jaime REINA / AFP) (Photo by JAIME REINA/AFP via Getty Images)

24 May 2024, Spain, Palma: View of the Medusa Beach Club building after the collapse. Two German women and two other people have died in the collapse of a fully occupied restaurant on Playa de Palma in Mallorca. Photo: Clara Margais/dpa (Photo by Clara Margais/picture alliance via Getty Images)

EDITORS NOTE: Graphic content / Firefighters work one day after a two-storey club-restaurant collapsed, killing four and injuring 16 people on Playa de Palma, south of the Spanish Mediterranean island’s capital Palma de Mallorca, on May 24, 2024. Four people died – two German women, aged 20 and 30, a 44-year-old Senegalese man and a 23-year-old Spanish woman who worked at the venue – and 16 were injured after the roof of a two-storey club-restaurant collapsed on Spain’s Mediterranean island of Mallorca on May 23, 2024, AFP reported. (Photo by Jaime REINA / AFP) (Photo by JAIME REINA/AFP via Getty Images)

24 May 2024, Spain, Palma: Two firefighters work at the site of the collapse. Two German women and two other people have died in the collapse of a fully occupied restaurant in Playa de Palma on Mallorca. Photo: Clara Margais/dpa (Photo by Clara Margais/picture alliance via Getty Images)

The accident occurred in the city of Palma on the Mediterranean island popular with tourists. The building housed a restaurant called Medusa Beach Club, located near the beach, and the area was packed with tourists at the time.

Police were unable to say how many people were on the premises around 8:30 p.m. when the accident occurred.

Public television the Balearic Islands, IB3, reported Thursday night that there were people dancing on the terrace that collapsed onto the floor below.

No official cause has been given for the collapse of the building.

The city declared three days of mourning, and a minute of silence was to be observed at noon Friday.