The state medical examiner's office was to perform an autopsy today to determine the cause of death of a 2-month-old girl whose body bore bruises and contusions and whose death has been called questionable by police.

Police said Whitney Hall, of the 2500 block of Emerson St. in southwest Baltimore, was pronounced dead yesterday at 9:45 a.m., less than 15 minutes after her mother, whose name was not available, took her to Bon Secours Hospital.

Police said Whitney was born Jan. 14.

At the hospital, physicians found bruises and contusions on the infant's buttocks and notified police.

Detective Vernon Holley, of the homicide squad, said a report of the child's death indicated there were no obvious signs of trauma on the infant's body, but that an autopsy was to determine the exact cause of death.

Holley said charges were pending autopsy results and that no member of the infant's family was in custody.