An Aurora man has pleaded guilty in the beating death of an 18-year-old high school student last year.

The Beacon-News reports that 20-year-old Juan Garnica entered the plea to first-degree murder on Thursday. He was sentenced to 30 years in prison for the death of Abigail Villalpando. Authorities say she was beaten to death with a hammer. Aurora police say Villalpando's body was burned and dumped in Montgomery, a town south of Aurora.

Villalpando's brother, Ricky Villalpando, said he wasn't happy with the sentence. He said even if Garnica "served a trillion years, it wouldn't be enough."