Homicide detectives are investigating the July death of a five-year-old Calgary boy after an autopsy determined his injuries were not "consistent" with the explanation provided by family members.

Eneas Emilio Perdomo was brought to the Alberta Children's Hospital by family members during the early hours of July 10. Police say he had serious injuries that were not consistent with the normal activities of a child his age.

According to the boy's family at the time, his injuries were the result of "numerous accidents," Staff-Sgt. Doug Andrus told reporters Wednesday afternoon. The child died a week after being admitted to hospital and an autopsy was performed.

"The autopsy confirmed that the child had swelling and bruising all over his body and numerous other injuries," Andrus said Wednesday.

Calgary’s homicide unit is now investigating the death, which has been deemed suspicious.

Police say the child lived with five people: two adults who are believed to be the boy's parents, as well as two teenagers and one young adult.

"(The family) provided us with statements and information that are not consistent with the injuries suffered by the child," Andrus said.

The boy's family have not been ruled out as possible suspects, Andrus said, but investigators are "keeping any open mind" and "looking at anyone who had exclusive opportunity with the child."

He added that it's still unclear who Perdomo's biological parents are, and police are still working to confirm the relationships between the child and the people who lived with him.

Investigators are hoping to speak with anyone who had close contact with the child.

Andrus said he was known by his middle name Emilio and arrived in Canada in February. Police are still working to confirm where the boy was originally from, but investigators are "exploring information with individuals outside the country."