Boulder attack suspect threw Molotov cocktails at people rallying for Israeli hostages, officials say. Here's what we know.

Eight people were injured in an attack Sunday in Boulder, Colorado, where peaceful demonstrators were marching to support Israeli hostages in Gaza, authorities said. 

The incident is being investigated as an act of terrorism, according to the Federal Bureau of Investigation, which described it as targeted. The suspect, 45-year-old Mohamed Soliman, was taken into custody. He is facing multiple felony charges as well as a federal hate crime charge.

Here is what we know so far.