Last weekend provided a small measure of relief to San Diego's homeless population with the arrest of a man who police suspected of attacking transients while they slept alone and setting them on fire. The relative calm proved to be short-lived.

Anthony Padgett, a homeless man who had been identified as the sole suspect in the spate of attacks on transients that left three dead, was released from jail Monday and not charged with any crimes. Police concluded there wasn't enough evidence to prosecute him.

Police defended the arrest, saying Padgett strongly resembled a man in convenience store surveillance video who police still believe is responsible for all four attacks.

The attacks have set the homeless population in the city on edge.