A 15-year-old girl was killed and a 13-year-old girl was injured Friday night after being struck by two vehicles while crossing Route 28 in Derry, N.H., police said.

Police arrived to the scene around 9 p.m. and the Derry Fire Department took the two teens to Parkland Medical Center. Both suffered serious injuries, according to a police report.

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Manchester Road was closed to traffic for five hours while police investigated the incident. Preliminary investigations revealed that the girls were crossing the road in an “easterly direction” when the two northbound-traveling vehicles hit them, Derry police said in the report.

The drivers of the two vehicles, George Draper, 63, of Bow, N.H. and Anne Bartlett, 58, of Manchester, N.H. have not been charged in the incident, according to Derry Police Sargeant Frank Stoncius.

The accident is still under investigation, police said.