Counterterrorism police in Britain are investigating an attack on Saturday that “seriously injured” two women in the northern English city of Leeds. The police said that they had recovered a crossbow and a firearm.

The police arrested a 38-year-old man, who was taken to the hospital with what they called a “self-inflicted injury.”

They said they were not looking for anyone else in connection with the attack, which happened on Saturday afternoon, and that the motive for the violence remained under investigation.