Simeon Adams, the teenager who shot and killed father-to-be Nathan Trapuzzano in 2014, pleaded guilty Thursday in connection with a second, unrelated shooting.
Adams entered a plea of guilty Thursday to one charge each of aggravated battery and carrying a handgun without a permit. In exchange, prosecutors agreed to drop an attempted murder charge.
Adams was sentenced in July to 55 years in prison for fatally shooting Trapuzzano while the 24-year-old was taking a morning walk on April 1, 2014.
Adams showed no remorse in July as he pleaded guilty to Trapuzzano's murder, and his victim's mother said she didn't feel justice had been done.
"I don't think justice has been served at all," Cheryl Trapuzzano said. "Justice for someone like Simeon Adams would be for him to have done to him what he did to my son. To be shot, made to walk to the street in severe agony and pain, fall down on that street, blasting himself off the concrete injuring his face and other parts of his body."
WATCH: Nathan Trapuzzano's family reacts to plea
Trapuzzano and wife Jennifer's first child Cecelia was born three weeks after his shooting.
A sentencing hearing for the Adams' latest charges was set for 1:30 p.m. on October 9.