A German art gallery employee infiltrated his own art in hopes of making a breakthrough. Now the police are involved.

A modern art museum in Germany has fired one of its employees after the facility said they added a personal touch to the exhibition — their own art.

According to Munich newspaper Süddeutsche Zeitung, the self-proclaimed maverick artist was a 51-year-old man who worked in the artistic service of the Pinakothek der Moderne, Museum of Modern Art Which carries more than 20,000 items, including works by Pablo Picasso, Rene Magritte, Salvador Dali – and, for a short time, an employee.

The employee, who was not named in the local report, hung a painting about 2 feet by 4 feet. A museum spokesperson told the Süddeutsche Zeitung newspaper that they were not sure how long the painting had been open, but they did not believe it had been hanging for very long.

“Moderators noticed something like this right away,” a company spokesperson said.

In a statement to CBS News, museum spokeswoman Tyne Neller said the piece was hung in an exhibition room of the Modern Art Collection outside of its working hours.

“As a result of the incident, he has been banned from entering the museum until further notice and will not continue his work,” Nihler said. “The work was removed in a timely manner.”

Police are also investigating. According to the Süddeutsche Zeitung newspaper, the employee drilled two holes in an empty entrance to hang the painting, which the police are investigating for property damage. The newspaper said, quoting the police, that the man hoped that hanging the painting would be a stepping stone to fame.

“Employees must adhere to strict security concepts and must not put valuable cultural assets at risk,” Niehler said.

The Pinakothek der Moderne is one of the largest modern and contemporary art museums in Europe, with four collections. The incident came just weeks after the opening of a new exhibition by the performance artist Flatz, who “posed naked in 1979 as a live dart board,” allowing spectators to throw darts at him, and in the early 1990s, swung upside down between steel panels, loudly hitting the metal for five minutes “until he passed out,” the museum said. He says.

“The exhibition is dedicated to FLATZ’s radical concept of the body, which, in an unambiguous way, repeatedly addresses objects that are also delicate and fragile,” the museum says.