NAIROBI, Kenya (AP) — At least 3,000 people were arrested in Kenya during four days of security operations across the country following a wave of terror attacks, officials said Tuesday.

Kenya police spokesman Masoud Mwinyi said most of those arrested and held at a sports stadium in the capital have been questioned by security agencies and released, but 447 suspects remain in custody under anti-terrorism laws that allow police to hold suspects longer than 24 hours. He said 69 suspects had been charged in court with various offenses.