4 killed, 14 hurt in Chicago mass shooting: 'Absolute chaos'

Four people were killed and 14 others wounded in a mass shooting Wednesday night in Chicago, police said.

The carnage erupted in the River North neighborhood, on the 300 block of West Chicago Avenue, when a vehicle pulled up to a location and at least one gunman opened fire on a crowd standing outside, Chicago police said.

The vehicle fled the scene immediately and no one has been taken into custody, police said.