SOMERVILLE (CBS) – The suspect charged in a string of attacks on women in Somerville is in the country illegally, officials with the U.S. Immigration and Customs Enforcement confirmed Monday.

Alfredo Romero Posada, an undocumented immigrant from El Salvador, is charged with attacks on Wallace Street Sept. 10, on College Avenue Sept. 24, and a third attack in Medford on Oct. 22.

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The 22-year-old Posada will be prosecuted on the local charges against him first, and then be handed over to immigration authorities.

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Police are still looking at Posada as possibly being connected with three similar unsolved assaults on women in Somerville.

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Posada, who was ordered held without bail on Friday, is scheduled for a dangerousness hearing on Tuesday.