A 17-year-old boy was killed and two other teenagers were wounded early Sunday in a shooting at a house party in a part of the Bronx where violence has surged this year, the authorities said.

The teenagers were shot around 1 a.m. at a home in the 700 block of East 232nd Street in the Wakefield neighborhood, the police said. The 17-year-old boy, identified by the police as Keshon Porterfield of the Bronx, was shot in the torso and was pronounced dead at Montefiore Medical Center. The other victims, a 17-year-old girl who was shot in the foot, and a 17-year-old boy who was shot in the leg, were both listed in stable condition at separate hospitals.

A young woman who said she was at the party said Keshon saved her.

“I heard shots in my ears and he was beside me,” said the 18-year-old, who gave only her middle name, Barbara, out of fear. “He pushed me out of the way.”

Several shots rang out, and the crowd surged toward a fence in the backyard and began scrambling over to escape. She looked back and saw Keshon on the ground, but she thought he had gotten back to his feet. “I didn’t expect him to die. I thought he ran out.”