Surabaya, East Java, Sept. 18 -- East Java Police said Thursday they detained 997 people in connection with violent protests that swept across the province between August 29 and September 16, as unrest spread among both adults and minors.

Of those arrested, 582 were adults and 415 were minors, East Java Police Chief Inspector General Nanang Avianto told reporters in Surabaya, on Thursday.

Police released 682 individuals, including many minors who were returned to their parents. The remaining 315 detainees are still undergoing legal proceedings.

"Almost no parent even knew what their child was involved in," Avianto said, adding that parents need to pay closer attention to their children's activities.

"It's disappointing for any parent ...