Homicide detectives are investigating after two people were discovered shot to death in south St. Louis Tuesday afternoon.

Police said the victims, a man in his early 30s and a woman in her 20s, were discovered by neighbors and friends inside a home on the 4500 block of Pennsylvania at around 3 p.m. Tuesday.

When police arrived on the scene, the victims were pronounced dead. Police said the initial investigation showed no indication of a robbery.

Police said a dog was also shot and taken for treatment.

The investigation is ongoing.