Police in Brazil Arrest Suspect in Brutal Slaying of Manhattan Art Dealer

A journalist films the entrance to the apartment where Brent Sikkema, an American art dealer, was found dead, in Rio de Janeiro, Brazil, Thursday, Jan. 18, 2024. The 75-year-old owner of a gallery in Manhattan was found stabbed to dead on Monday. AP Photo/Silvia Izquierdo

RIO DE JANEIRO—A suspect was arrested in the brutal killing in Brazil of an American art dealer who was the co-owner of a prominent gallery in Manhattan, police said Thursday.

Brent Sikkema, 75, was found dead on Monday with 18 stab wounds in his Rio de Janeiro apartment.