The Lehigh County Coroner's Office is investigating the death of a 1-year-old girl in Allentown.

The office says Nazalya Dennis of the 400 block of Fulton Street was pronounced dead on Saturday at 12:08 a.m. at Lehigh Valley Hospital-17th Street.

An autopsy was performed Monday. The cause and manner of death are pending toxicology and other testing, according to the coroner.

The coroner's office says the Allentown Police Department is conducting the investigation with the assistance of Lehigh County Detectives.