Kenyan police say they have arrested 11 people on suspicion of having ties to al-Qaida.

Authorities made the arrests while carrying out a raid Wednesday on an Islamic school and other locations in the eastern coastal city of Mombasa.

Police say an Islamic preacher, a 15-year-old boy, and an employee of the National Museum of Kenya were among those taken into custody.

Witnesses complained about the way in which the police carried out the raid and made the arrests.

Al-Qaida has been linked to the 1998 bombing of the U.S. embassy in Kenya and the bombing of an Israeli-owned hotel in Mombasa in 2002.

Some information for this report was provided by AFP and Reuters.