FBI and Homeland Security Warn NY Police Watch For Explosives Materials

The FBI and Homeland Security officials are warning local police departments to be on the look out for materials that could be used to make explosives. The warning came as officials investigate a suspected al-Qaida associate and raided three New York City apartments.

Investigators issued warrants to search the residences for explosives material but did not find any, according to a person briefed on the matter who was not authorized to discuss the case and requested anonymity.

The joint intelligence warning, issued Monday, lists indicators that could tip off police to homemade hydrogen peroxide-based explosives, such as people with burn marks on their hands, face or arms. The warning was obtained by The Associated Press.

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