Homemade explosions land man in jail

BOULDER, Colo., June 19 (UPI) -- A Colorado man who set off explosions in his garage was freed on bail Tuesday while police try to determine if he is an eccentric scientist or a dangerous man.

Ronald Swerlein posted $50,000 bail after spending the weekend in jail, the Longmont Daily Times-Call reported.

Police raided the house after Swerlein's neighbors in Longmont complained of hearing explosions. Swerlein said he was working on a fuel for model rockets.

Neighbors say the retired electrical engineer kept to himself but received frequent UPS deliveries. In a search of his house, police found explosive chemicals, the Rocky Mountain News reported.

They also found weapons and books with titles like "Your Revenge Is In The Mail" and "Home-made Explosives."