The remains of as many as four infants were found in a storage locker in Winnipeg, Manitoba, Monday after U-Haul International Inc. employees made "a disturbing discovery."

Police were called to a storage-locker facility on McPhillips St. in the northwest of the city of 700,000 at 1 p.m. Monday, Winnipeg Police Constable Eric Hofley said Tuesday at a press conference. The remains are in such a state that it's unclear whether there are three or four infants, he said.

The police child-abuse unit is investigating and police are speaking with several people as part of the probe, Hofley said. It's too early to say whether foul play is involved, though concealing and storing human remains is a crime, he said.

"U-Haul team members made a disturbing discovery when taking inventory of a delinquent storage locker on Monday," Razmin Mansoub, marketing company president of U-Haul Company of Central Canada, said in an emailed statement. "U-Haul is deeply shocked and saddened by this discovery."

Autopsies are pending and the age of the infants hasn't been confirmed. The remains are of "very young infants" Hofley said. Police are expected to release further details Wednesday.