Investigators say 35-year-old Luis Javier Solis-Gonzalez surrendered at the border a day after the bodies were discovered at a home in El Paso.
Solis-Gonzalez is in the El Paso County Jail on a charge of capital murder of multiple persons. Online jail records Monday did not list an attorney for the 35-year-old suspect.
The bodies of 34-year-old Marysol Saldivar, 42-year-old Eric DeSantiago and 13-year-old Cassaundra Holt were discovered Thursday. Autopsy results are pending.
Police began looking for Solis-Gonzalez amid concerns he fled to Mexico. He turned himself in Friday to U.S. authorities at the Paso Del Norte port of entry.