Published: Dec 29, 2011 4:32 PM EST

ST. PETERSBURG, Fla. (AP) - Two 21-year-old men are accused of killing a woman whose body was found floating in a St. Petersburg lake on Christmas Day.
    
St. Petersburg police arrested Letrell McKnight and Santonio Smith late Wednesday after receiving a tip that the men beat 42-year-old Stacia Kay Berman to death in an apartment on Dec. 24.
    
Police say the men stuffed Berman's body into the trunk of a vehicle and drove to Lake Maggiore, where they put her in the water.
    
Authorities say several witnesses saw the beating.
    
According to a police report, both men confessed. They told police Berman had stolen shoes from them before the beating.
    
McKnight and Smith are charged with second-degree murder.
    
Police say they anticipate additional arrests.

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