LAPD Chief Charlie Beck promised a vigorous investigation after the remains of two babies believed to have died seven decades ago were found in the basement of an apartment building near MacArthur Park.

The remains were found in a steamer truck wrapped in Los Angeles Times newspapers from the 1930s. A ticket to the 1932 Olympics and other items were found nearby.

“We’ll put detectives on this case for the long term,” Beck told The Times. “We’ll try to reconstruct the circumstances based on what the coroner tells us, based on the history of the residence and based on science. We have many more tools and technology available to us than before, which may allow for identification of the victims and closure to any family members.”