Hispanic teen Berenice Juarez has been found guilty of first-degree murder in the 2010 stabbing death of her mother's boyfriend

The jury deliberated five hours to reach its verdict. Juarez, 18, immediately was sentenced by Circuit Judge Karen Miller to life in prison. She will be one of Florida's youngest prison inmates serving a life sentence for first-degree murder, according to the Department of Corrections. Then 16, Juarez confessed to fatally stabbing Gildardo Ramos Paz in the heart on February 17, 2010. That morning, she waited with her brother, Francisco Juarez, at a PalmTran bus stop. He continued on to school while she stayed behind. Surveillance video from the bus shows Paz's gold SUV in the background and Juarez standing nearby in her white, hooded shirt moments before she killed him. That shirt, with Paz's blood stains, was submitted into evidence. Juarez lured Paz to the parking lot by pretending to be her mother, Edith Martinez, and texting him to meet her. The teen disapproved of their romantic relationship. She approached his car, knocked on the window and asked for directions to the turnpike before slicing through his hand and thumb and plunging the folding knife she had stolen into his heart. The teen then walked away, wiped Paz's blood from the blade onto her sock, ditched the knife in a trash can and continued on to school. Her two older brothers testified that Juarez had said she was going to kill Paz, but they thought she was joking.