Prince William County police have charged a 21-year-old Dale City father with felony homicide for allegedly shaking his 7-week-old son repeatedly and throwing him to the floor on at least one occasion this month, causing brain injuries that led to the baby's death last week.

Police arrested Ricardo Robles, of the 14300 block of Westway Lane, Friday afternoon after doctors at Inova Fairfax Hospital removed the infant from life support. The baby, Jesus Robles, was admitted to the hospital June 5, unconscious and suffering from a skull fracture, according to police. Six days later, the infant stopped showing signs of brain activity, police said.

In addition to felony homicide, Robles was charged with three counts of felony child abuse. He was being held without bond yesterday at the Prince William County Adult Detention Center. The baby's mother, whom police have not identified, has not been charged with any crime.

Police spokesman Dennis Mangan said Robles and the mother brought the infant to Potomac Hospital early on June 5. The baby then was flown to Fairfax Hospital's pediatric intensive care unit, where doctors determined that his injuries "were consistent with shaken baby syndrome," Mangan said.

The baby stopped showing signs of brain activity Friday morning and was removed from life support about 3:30 p.m. According to a criminal complaint filed that day in Prince William County Juvenile and Domestic Relations Court, police interviewed Robles at least three times before his son's death. In the complaint, Detective Peter Barlow alleges that the baby's injuries were inflicted over three or four days in the first week of June.

The complaint alleges that Robles initially shook the baby and threw him "to the floor of the apartment, causing a large skull fracture," and that, a few days later, Robles "did again violently shake the victim, causing [him] to lose consciousness." Robles later said he caused the injuries, Barlow wrote in the complaint.

Assistant Commonwealth's Attorney Claiborne Richardson II said yesterday that Robles first made up a story for hospital officials about the child's injuries but later recanted. Authorities are waiting for autopsy results from the medical examiner's office to determine an official cause of death, Richardson said.

A preliminary hearing in the case has been set for July 14 in Juvenile and Domestic Relations Court.

CAPTION: Ricardo Robles, 21, is charged with felony homicide in his baby's death.