GREENTOWN, Ind. — Kelly Gaskill gave her grandson, Lucas Bieghler, one last kiss on Sunday. She could have never imagined that would be the last time she saw his smile.

"He brought so much joy and love into our lives, love and joy that we didn't even know we were missing until he came," Gaskill said.

Gaskill’s daughter, 17-year-old Myah Pierson, gave birth to the 4-pound, 5-oz. preemie on Sept. 2. He would have been one month old on Tuesday.

”It was a struggle to get him to gain weight, but he was doing so good,” Gaskill said. “He was gaining weight [and] he was starting to look around.”

Lucas never made it to his one-month milestone, with officials pronouncing him dead on Sunday.

His 18-year-old father, Alexander Bieghler, was arrested in connection with Lucas’ death later that day.

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