STORY: A machete-wielding man attacked several people at two churches in southern Spain on Wednesday.
At least one person was killed in the attack which took place in the port city of Algeciras.
Clergymen at two different churches, about 1,000 feet from each other, were targeted.
The man who was killed was Diego Valencia, a sacristan at the Nuestra Senora de La Palma church.
Spanish authorities said they were investigating what they called a possible "terrorist" incident.
Police said the attacker had been arrested, and a police source shared footage of a man in a hooded jumper and handcuffs being walked through a police station.
Police have not released details of his name or nationality.
Local media said he was a 25-year-old Moroccan.
Spanish Prime Minister Pedro Sanchez expressed his condolences to the victims, while the secretary general of Spain's Episcopal Conference, Francisco Garcia, spoke of his "great pain" on hearing the news.