BATON ROUGE (AP) — A gunman went into a Baton Rouge hospital room where his estranged wife was visiting her 17-year-old son early Friday and shot her and her boyfriend, critically injuring the boyfriend, police said.

Police searched for Darrell Garner, 37, of Baker, wanted on two counts of attempted first-degree murder, said Cpl. L’Jean McKneely, a police spokesman.

He said Garner was identified as the gunman by his wife, 35, who was shot in the shoulder. Her boyfriend, 49, was shot in the head and arm, McKneely said. He did not identify either.

McKneely said Garner and his wife were not living together. The teenager was not Garner’s child, he said.

The shootings happened about 12:30 a.m. at Baton Rouge General Medical Center-Mid-City.

That was 4 1/2 hours past the end of official visiting hours. ‘‘We try to be extremely accomodating about visiting hours,’’ hospital spokeswoman Terri McNorton said.

McKneely said Garner has a long arrest record, but he does not know any details, including whether Garner was ever convicted.

Both victims were under guard; the man was taken to another hospital for surgery, McKneely said.

The gunman apparently left while doctors and nurses treated the victims. The hospital was put on lockdown during a four-hour search for Garner.

McNorton said hospital officials asked the police chief Friday for a hospital safety meeting.

She said the hospital has a 24-hour contract to keep an off-duty city policeman on guard.