530
On Tuesday , Saudi security officials said three suspected al - Qaida militants were arrested in Jiddah , Saudi Arabia , in sweeps following the near - simultaneous suicide attacks on three residential compounds on the outskirts of Riyadh on May 12 .
 ( arrest jail: arrested,  militants: person, Jiddah: place) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: declare bankruptcy, transfer ownership, transfer money, marry, transport, die, phone write, arrest jail, convict, sentence, sue, end organization, start organization, end position, start position, meet, elect, attack, injure, born, fine, release parole, charge indict, extradite, trial hearing, demonstrate, divorce, nominate, appeal, pardon, execute, acquit, merge organization, Arguments type: beneficiary, prosecutor, plaintiff, seller, victim, buyer, agent, destination, artifact, organization, recipient, person, place, origin, target, giver, adjudicator, attacker, vehicle, defendant, entity, instrument. 
Text: {0} 
Answer:
 ( arrest jail: arrested,  militants: person, Jiddah: place) 