 To address these worries, the department deployed Brandon del Pozo, a Jordanian-based intelligence officer, to Mumbai to collect information on the attacks and report on ways they reflected similar vulnerabilities in the New York City's extensive commuter rail system.On 21 July 2006, police arrested three people suspected to be involved in the bombings.Police have detained more than 300 suspects since 18 July but these are the first arrests in the case.