A 12-year-old boy was killed this afternoon when he was struck by a tractor-trailer in the city's Mayfair neighborhood, police said.

Albert Tallez was running or on a skateboard going north on Cottage Street when he got caught under the back right tires of the tractor-trailer traveling east on Cottman Avenue around 4 p.m., police said.

Tallez, of the 7600 block of Torresdale Avenue in Holmesburg, was transported by medics to Aria Health-Torresdale Campus and pronounced dead at 4:46 p.m.

The driver stopped at the scene and there were no immediate indications that he had run a red light or was speeding, police said. The investigation is ongoing.