Four Oak Grove High School students were taken to the hospital on Friday after eating marijuana-laced brownies, San Jose police said.

A 15-year-old boy brought the brownies to school and gave them to the students, who subsequently became sick, said Bob Nunez, East Side Union High School District superintendent.

“I don’t know if the students knew what was in them when they ate them,” Nunez said. “But they got sick right away.”

Nunez said the boy was arrested and taken to Santa Clara County Juvenile Hall.

The incident occurred about noon. Although the students were taken to hospitals, their condition was not considered serious, Nunez said.

Nunez said he is concerned about this situation and that this was the first such incident he had heard of reported at the school.

“We want to keep an eye out for these kind of things,” he said.

Contact Sandra Gonzales at sgonzales@mercurynews.com or (408) 920-5778.