Security personnel sealed off the campus and one Agence France-Presse reporter said special forces had led an assault.
The missing include four from Al Jazeera, two from Agence France-Presse and one from Getty Images.
La Scala's 800 workers will go on strike today, forcing the Milan opera house to cancel two shows, Agence France-Presse reported yesterday.
In Falluja, an explosion rocked one of the principal mosques, killing four Iraqis, Agence France-Presse said.
Jack Straw, the British foreign secretary, confirmed that a woman with dual British and Irish citizenship was among the three kidnapped, Agence France-Presse reported.
Bernie Ecclestone, the Formula One boss, asked about the demonstrations by the news agency Agence France-Presse, said, "What's happened?
He pleaded guilty to possessing crack, heroin, marijuana and ketamine, as well as two driving offenses, Agence France-Presse reported.
In locking down the area, the police immediately closed a busy subway station, shooed away tourists and detained several foreign journalists, including two reporters for Agence France-Presse, who were forced to delete images from their cameras.
French news agency Agence France Presse said its Afghan reporter Sardar Ahmad, his wife and two young children were killed in the attack.
The militants had surrounded the area after the attack," one official told Agence France-Presse after the second explosion, in Babar Ghar, near Ladha, in South Waziristan.
