"erupted in violence" vs. "erupted into violence" [closed]

I have come across both in major newspapers. Are both correct? What kind of phrase is this?

  1. Erupted in violence
  2. Erupted into violence

This is the example sentence.

"This led to riots in 2005, when the country's impoverished banlieues(suburbs) erupted into violence."

As mentioned in my comment I think it may have something to do with the word following in/into. (e.g) The crowd erupted in unison. Not into.


I found an example here. I'm no expert at the English language, but this is the example:

"When you use in, you're indicating position.

Her phone was in her pocket.

When you use into in a sentence, you're indicating movement; an action is happening.

She stuffed her phone into her backpack."