Hayward, Wis. ? A Hmong immigrant convicted of murdering six deer hunters and attempting to kill two others after a trespassing dispute was sentenced to life in prison Tuesday with no chance for parole.

Judge Norman Yackel ordered Chai Soua Vang, 37, to serve six life prison terms, one after the other, guaranteeing he would never be freed from prison. Wisconsin does not have a death penalty.

Yackel described Vang as a “time bomb ready to go off” at the slightest provocation.

Vang, a truck driver from St. Paul, Minn., was convicted on six counts of first-degree intentional homicide and three counts of attempted homicide in the Nov. 21 slayings.

The homicide charges carry a mandatory sentence of life in prison, but Yackel could have set a parole eligibility date for Vang. The judge also sentenced Vang to three concurrent terms of 40 years in prison on the attempted homicide charges.