WAREHAM, Mass.—Two people died over the weekend when the dirt bike they were riding collided with an SUV near a shopping plaza in Massachusetts, authorities said. The victims of the crash in Wareham just before 11 p.m. Saturday were identified as Robert Stocker, 17, of Woburn, and Brady Petrucci, 20, of Raynham, according to a…

LONDON—A car collided Thursday with the gates of Downing Street in central London, where the British prime minister’s home and offices are located, setting off a rapid, intense security response at one of London’s most-fortified sites. No one was injured and police said they were not treating the incident as terror-related. Police arrested a man…

WINTER HAVEN, Fla.—A student pilot was trying to land a small plane at a central Florida airport when it collided with another small plane, sending both aircraft crashing into a lake and killing four people, a preliminary report released Tuesday said. A Piper J-3 Cub seaplane and a Piper PA-28 Cherokee fixed-wing plane were both…

SEOUL, South Korea—Nearly 50 vehicles collided on an icy highway near the South Korean capital Sunday night, killing one person and injuring dozens. At least 47 vehicles were involved in the accident on the Guri-Pocheon highway, where they skidded on the slippery road and collided in succession, said Hwang Tae-geun, an official at the fire…

WATSONVILLE, Calif.—Three people and a dog were killed after two small planes collided in Northern California while trying to land at a rural airport, authorities said Friday. The names of those killed after their planes crashed Thursday at the Watsonville Municipal Airport will be released once their families have been notified, the Santa Cruz County…

BOSTON—A collision of two subway trains in Boston sent four employees of the city’s troubled transit system to the hospital, officials said. Both Green Line trains derailed in the crash around 9:20 p.m. Wednesday, officials said. The subway system continued to experience service disruptions Thursday morning. A two-car westbound train carrying 20 to 25 passengers…

ZHANGJIAKOU, China—Freestyle skier Jon Sallinen’s first run in Olympic halfpipe qualifying Thursday wasn’t picture perfect. He drifted out of the halfpipe and collided with a cameraman. Collarbone aching, the 21-year-old from Finland picked himself up and tried it again in run No. 2—only to fall once more and have to make the walk up the…

CAIRO—Two trains collided on Friday in southern Egypt, apparently after someone activated the emergency brakes, killing at least 32 people and leaving 108 injured, Egyptian authorities said. Dozens of ambulances rushed to the scene in the southern province of Sohag, according to a statement by Egypt’s heath ministry. The wounded were transferred to four nearby…