Police investigate after woman and son killed in fall at San Diego ballpark

• Mother and two-year-old fall from third level at Petco Park
• Police say incident appears to be suspicious'

San Diego police were investigating the deaths of a woman and her two-year-old son after they fell from the third level of Petco Park on Saturday, just as thousands of baseball fans were heading inside for a Padres game.

The woman, 40, and the boy were pronounced dead at 4.11pm, about 20 minutes after police were alerted, Lt Andra Brown told the the San Diego Union-Tribune.