By Amy Wadas

WILKINSBURG (KDKA) — Allegheny County Police are investigating after two children were removed, unresponsive, from a Wilkinsburg home hours apart Wednesday morning.

According to Wilkinsburg Police, officers were called to the home on Franklin Avenue at 7:35 a.m. for reports of a possible carbon monoxide emergency.

(Photo Credit: KDKA Photojournalist Jim Cahalan)

When they arrived, they found a 5-year-old girl unresponsive. She was taken to the hospital just after 7:30 a.m.

During their investigation, police say they discovered a 5-year-old boy had been taken out of the home hours earlier, around 1:45 a.m., also unresponsive.

Allegheny County Police say they are twins.

Police say Pittsburgh firefighters were called in to check for carbon monoxide, but the results were negative.

KDKA spoke with the twins’ aunt over the phone on Wednesday.

They live at the home with their mom and grandmother.

The aunt said her niece and nephew got sick after eating salmon in a can for dinner last night.

She said other family members in the home also got sick after eating the same thing.

She stressed there was no foul play.

Wilkinsburg Police say they’ve turned the investigation over to the Allegheny County Police Homicide Unit.

Allegheny County Police say there are no obvious signs of trauma to the children.

They are working with the Allegheny County Crime Lab to determine what caused the children to become unresponsive.

The boy is listed in critical condition, and the girl is in stable condition.

The family is waiting for test results to come back.

Stay with KDKA for the latest on this developing story.