A call for a robbery in Williamsbrigde ended with a sergeant hurt and an 18-year-old suspect shot, police say.
The NYPD say the incident began around 9:15 p.m. Thursday when a father called 911, saying his own son had robbed his mother and brother at gunpoint inside their home on Van Nest Avenue.
Investigators say officers and the father tracked the suspect to an apartment building on East Gun Hill Road…