An American man reportedly in the middle of a divorce with his Japanese wife was arrested Wednesday on suspicion of stabbing her to death in the lobby of the Tokyo Family Court building, according to police.

The 32-year-old husband was found in possession of several knives and bottles containing a liquid thought to be gasoline when he was apprehended by police shortly after fleeing the court building to nearby Hibiya Park, the police said.

The woman, 31, who was stabbed in the neck at the court building around 3:20 p.m., was confirmed dead at a hospital, authorities said.

The husband had cut his own wrists and was also taken to a hospital.

According to the police, the wife and husband were meeting at the court for divorce proceedings that day. He had been sitting on a bench by the security check for the building, and ambushed her when he saw her arrive.

Police said a motive was not yet known and the couple’s names were being withheld.

The court is in the Kasumigaseki district of central Tokyo, which is dotted with government offices and near entrances to Marunouchi and Chiyoda line subway stations.