FAGERSTA, Sweden — Several people were wounded after an attacker armed with a sword entered Brinellskolan high school in central Sweden on Friday, according to local authorities.

Fagersta municipality said police detained the suspect after the attack and began searching the school. Authorities did not immediately disclose the number or severity of the injuries.

Local media reported that police shot the suspect in the leg. Aftonbladet said the attacker was carrying a machete when police intervened.

Several emergency vehicles were deployed to the school, including ambulances and police cars, while a police helicopter was also reported at the scene, according to Swedish public broadcaster SVT.

Other schools in the area were placed under lockdown as police secured the site and searched the premises. Authorities have not yet provided further details about the circumstances that led to the attack or a possible motive.

The incident occurred in Fagersta, a small central Swedish city with a population of about 12,000. Police and emergency services remained at the school as the investigation continued.

Authorities are expected to provide further information on the number of injured people and the suspect’s condition as the investigation progresses.