Shocking footage of the moment Liz Hayes and the 60 Minutes crew came under attack while reporting on Europe's refugee crisis has been released.

The reporter approaches a group of men who appear to be African migrants in the Swedish capital of Stockholm when, without warning, things quickly turn ugly in the investigation that airs this weekend.

One of the men hurls a can at the journalists and another punches a cameraman as Hayes tries to quell the violence.

The Nine Network says a cameraman had his foot run over in one of two attacks on the 60 Minutes crew.

Liz Hayes.

Police arrived after the first fight broke out but when they left the violence flared up again, according to a report by local news service Avpixlat.

"A photographer was attacked and received a blow on the mouth with a closed fist so that the bloodshed occurred," reporter Jan Sjunnesson wrote.

"A jar was then discarded into the camera. At the same time attacked another photographer who also was beaten right across the chin so that a tooth loose."

Hayes was unhurt in the attacks last month while a cameraman and producer were slightly injured, a Nine Network spokeswoman said.