State Police report a cab driver who picked up a man and a woman in downtown Boston early Friday was stunned with a taser and had his cab stolen from him on I-93 southbound near the Keystone Apartments.

State Police say the cabbie, a 49-year-old from Weymouth driving for V & A Cab of Boston, had pulled into a cutout there around 2:48 a.m. when the pair seemed to get into a heated argument.

One of the two then pulled out a taser, shot him, got him out of the cab and took off, State Police say.

"A short time later, another trooper observed the cab traveling in the opposite direction of him on Blue Hill Avenue in Mattapan, operating erratically and then crashing into a pole in front of 1336 Blue Hill Ave. The suspects in the cab, a male and female, ran away from the crash."

State and Boston Police searched for the two with no luck.