A man is holding a woman hostage at a building in the city of Hilversum used by Dutch radio station 3FM, Dutch news agencies NOS and ANP reported on Thursday, citing police.

Reuters could not immediately confirm the reports. Police had cordoned off the building, a Reuters reporter on the scene said.

The station’s broadcasting is continuing without reference to the situation inside.

ANP reported the man threatened the woman, an employee at the station, with a knife in a parking lot next to the building and forced her to take him inside. The agency cited police.

A negotiator is attempting to contact the man, ANP reported.