The Judicial Investigation Agency, known as the OIJ, detained the suspects during raids on three homes in Roxana de Pococí early Thursday, the Costa Rican outlet Teletica reported. The suspects were identified as a 31-year-old woman with the surname Arroyo and a 34-year-old man with the surname Gutiérrez.

Van Dyke was found dead on Feb. 14 at his home in Cahuita, on Costa Rica’s Caribbean coast. He had multiple stab wounds and signs of asphyxiation, authorities said. He was 66.

According to previous reporting, Van Dyke was inside his home with his girlfriend when at least two people threatened them with a firearm, confined them to a room for several minutes and stole valuables. His girlfriend told authorities that two armed men entered the home while she was showering, restrained her with zip ties and stole items including a 2013 Hyundai Elantra. She survived the attack without serious injuries.

Previous reporting identified Van Dyke’s girlfriend as a 31-year-old woman with the surname Arroyo, but authorities have not publicly clarified whether the woman arrested Thursday is the same person. Investigators have not disclosed additional details about the suspects’ alleged roles in Van Dyke’s death.

Although the killing was initially described as an apparent robbery, Costa Rican investigators said they were examining several possible explanations.

Van Dyke came from a pioneering Santa Cruz surfing family. His father, Gene Van Dyke, was a Northern California surfing pioneer, and his mother, Betty, helped popularize women’s surfing in the 1950s and 1960s. The family also operated Van Dyke Ranch near Gilroy.

Van Dyke moved to Costa Rica in 1983 and became known as “King” for his mastery of the powerful Salsa Brava reef break along the country’s Caribbean coast. He also operated a hotel in Puerto Viejo de Talamanca for decades.

“My brother was a very benevolent, giving person who would help just about anybody,” his brother, Peter Van Dyke, previously told the Chronicle. “Kurt would never hurt anybody, and he was always there when you needed him. Everyone that he met knew this about him.”

The arrests come nearly nine months after Van Dyke’s death, which shocked the tight-knit surfing community in Santa Cruz and beyond. The case remains under investigation.