Three men have been convicted of involvement in raiding London's famed Hatton Garden jewelry district, an audacious heist that prosecutors called the largest burglary in English history.

The haul, which included gold and diamond jewelry, cash and other valuables belonging to local jewelers, was worth an estimated 14 million pounds ($20 million).

Prosecutors said the gang carefully planned the burglary. The men chose the Easter holiday weekend last year to carry out the crime, and were able to secure their break-in to a safe deposit facility in the jewelry quarter over two nights without anyone noticing.

Carl Wood, William Lincoln and Hugh Doyle — aged 48 to 60 — were convicted Thursday. Four other men, described as the ringleaders of the gang, pleaded guilty earlier.