A mother and baby were shot dead inside a car in Connecticut. A suspect has been arrested over 1,600 miles away.

A suspect in the fatal shooting of a woman and her 4-month-old son inside a car in Hartford, Connecticut, was arrested Saturday in Puerto Rico, officials said.

The U.S. Marshals Service said they found Lance "Macho" Morales at a residence in the barrio of Fajardo. Police believe the 23-year-old Waterbury, Connecticut, resident pulled up alongside a car Tuesday and began firing because of a dispute over a vehicle with a woman in the car, Jessiah Mercado.

Mercado, 20, and her infant son were killed. A man in the car was shot and injured.