have material for an explosion as powerful as the one he saw in news coverage.

Steve Young, a friend and neighbor, said Beal's daughter told him the explosives were determined to be legitimately purchased and stored fireworks. She also said the explosives and other evidence found in the house and her father's car did not match residues found at the crime scene.

"Everyone can see how he was a suspect because of the relationship, but they couldn't find anything," Young said. "They gathered the evidence, and the system worked, and there was nothing that could tie him to the explosion. We're just glad he's free to have his life back."

This undated selfie taken from Facebook shows Ildiko Krajnyak. Prosecutors say federal agents found explosives while searching a home owned bythe former boyfriend of Krajnyak, who was killed in an explosion at a Southern California office building.(Photo: Ildiko Krajnyk, AP)

Krajnyak, 48, was killed and two female clients were seriously injured when she opened a box that erupted in a fiery explosion at the spa in the city of Aliso Viejo, about 50 miles (81 kilometers) south of Los Angeles, investigators said.

Evidence from the crime scene was still being processed and investigators were following leads, the Orange County Sheriff's Department said in a statement Tuesday. No suspect will be named in the killing until investigators have enough evidence to bring charges.

At Beal's home in Long Beach, the curtains and blinds were drawn and he did not answer the door or return messages sent to him by friends on behalf