An 18-year-old from Maryland who was shot and killed in Brightwood last week met her suspected killer on a dating site, reports WJLA. Siobhan Lee was found dead on a sidewalk early in the morning of January 25, and police later tracked her iPhone to the apartment of a 21-year-old man who has since been charged with first-degree murder:

Investigators didn’t have a name, but they knew her iPhone was missing. They tracked the phone to an apartment building on Kennedy Street, where they found and questioned 21-year-old Alexander Buckley. Eventually, he directed police to the bedroom closet and retrieved an iPhone from a shoe. They also found a 9-mm handgun in the apartment.

According to court documents, Buckley changed his story several times, but he finally told investigators he connected with Lee via a social media app called “Tagged.” He told them he wanted to meet up with her to have sex. He did not admit shooting her, but he is charged in her murder.

Buckley is next set to appear in court on February 8.