Prince George's County police yesterday arrested a 27-year-old Bronx, N.Y., woman in connection with the deaths of a man and his daughter whose bodies were found May 5 in their Temple Hills house.

Police said Ann Marie Spence, an unemployed beautician, told homicide investigators that she mixed a common household cleaner into food apparently eaten by Dennis White, 33, and his daughter Donna, 15. Police described Spence as White's girlfriend.

Spence, who voluntarily came to Maryland for questioning, has been charged with two counts of attempted murder pending the Maryland medical examiner's final ruling on the cause of the deaths. "They haven't said there was a murder yet," police spokesman Cpl. Bruce Gentile said, explaining the charges against Spence.

Police would not say what cleaning product was suspected in the deaths.

Police called the motive in the case "domestic," ending speculation about a link between the Whites' deaths and those of three persons found shot to death Feb. 28 in their home near Glenarden. Both cases involved houses that were equipped with sophisticated alarms and that showed no signs of forced entry.

Police found more than $1 million in cash stashed in two suitcases in the attic of Dennis White's house at 5319 Old Branch Ave. A police source has said that White, a native of Jamaica, had been under surveillance by county officers as part of an investigation into a cocaine and marijuana distribution ring with New York connections.

Police said Spence, who also is a native of Jamaica, was a frequent visitor in the White home.