A split panel of the Maryland Court of Appeals has reinstated a man’s murder conviction, finding a state’s witness did not need to be qualified as an expert to testify that cellphone users can adjust a cellphone’s ability to track and collect location data.

Rony Galicia was one of four men convicted by a jury in Montgomery County Circuit Court for his alleged role in the fatal shooting of two teenagers in June 2017. Galicia was sentenced to life in prison.