A woman and her two-year-old son were killed in a stadium fall prior to the San Diego Padres-Atlanta Braves baseball game.
The police are investigating a suspected criminal offense.
The 40-year-old woman and the child fell from the third level, where the arena's catering area is located, onto the asphalt.
Resuscitation attempts were unsuccessful.
The news agency Reuters and "CNN" report with reference to the police that the father of the family was also present in Petco Park.
The mother and her son were residents of San Diego.
The police said according to the "San Diego Union-Tribune" it was too early to determine whether it was an accident or not, but the death of the victims appeared "suspicious".
The newspaper quoted several stadium visitors who said they had witnessed the incident.
ngo / sid / Reuters
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