Spanish police have recovered a painting by British artist Francis Bacon, valued at approximately five million euros ($5.42 million), and it is one of five paintings stolen from a house in Madrid in 2015.

“Study for a Portrait of José Cabello,” painted by Bacon in 1989, is the fourth painting recovered from a group of stolen paintings whose combined value is estimated at about 25 million euros.

In February, police arrested two people accused of receiving stolen works of art in Madrid, which ultimately led them to discover the painting in a property in the Spanish capital.

The police said in a statement that they had arrested 16 people since the start of investigations, believed to be the mastermind and perpetrators of the robbery.

Police said they were continuing to investigate Spanish nationals with links to organized groups from Eastern Europe, hoping this would lead them to the fifth painting.

Local media reported that the paintings were stolen from the apartment of Jose Cabello, Bacon's friend, although the police did not confirm or deny this information.

Bacon was born in Dublin and died in Madrid in 1992. He was one of the most famous artists of the twentieth century and was famous for his disturbing vision of the human body. His fame and the value of his works have increased in the art market since his death.