ST. PETERSBURG, Fla. (AP) - Police in St. Petersburg are asking for the public's help in finding a pregnant teenager who was last seen a week ago.
    
Seventeen-year-old Morgan Keyanna Martin is four months pregnant. Police say she left home shortly after receiving a phone call about 12:30 a.m. on July 25. She left her purse, money and identification at home.
    
Authorities say she may have gotten into a white vehicle. Her family says no one has heard from her since she left home.
    
Martin is 5-foot-2 and weighs about 175 pounds. Authorities say she has dark hair and brown eyes.
    
Anyone with information about Martin is urged to call the St. Petersburg Police Department.

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