Two assaults in Cambridge Tuesday night have been linked to the same group that committed four armed robberies the same night, Cambridge police said yesterday.

A multi-jurisdiction search continued yesterday for the four teenagers suspected in the series of crimes.

At the intersection of Broadway and Dana Sts. Tuesday night, a Cantabrigian was elbowed in the jaw and knocked to ground by members of the group, police said.

Moments later, near Ellery St., a woman was grabbed and shaken. No words were exchanged in the incident, and nothing was taken.

In addition to the two assaults, the group committed four robberies, including two involving Harvard undergraduates, according to Cambridge police.

The work of piecing all six incidents together continued yesterday, as Harvard University Police Department (HUPD) detectives worked with Cambridge detectives and members of the Cambridge Police Department's crime analysis unit.

Detectives have spoken with the victims and are trying to set up a photo array of possible robbers, McNamara said.

After speaking with the victims, HUPD amended its description of those wanted in the crime. Police are now describing the robbers as four black males, aged 17-20. Three were around 5'8" tall and wore black puffy jackets, including the robber who brandished the handgun during the incidents.