Updated at 7:55 p.m. ET.

At least 13 people have died and 100 others are confirmed to be injured [1] after a van drove into a crowd in a popular tourist area in Barcelona. Local police have said that they are treating the incident as a terror attack [2].

Here's what we know:

• The incident took place near Las Rambas, one of Barcelona's most popular tourist destinations. The historic area is well-known for its pedestrian path, flanked by outdoor cafes and stalls, and is frequently packed tightly with crowds on foot. Cars are allowed to drive on either side of the path, which was not previously considered to be a danger to those strolling through the area.
• Populous tourist cities such as London, Nice, and Berlin have been the target of a series of vehicle attacks, which began in July of 2016.
• President Donald Trump [3] is being briefed on the attack by Gen. John Kelly and tweeted [4], "The United States condemns the terror attack in Barcelona, Spain, and will do whatever is necessary to help. Be tough & strong, we love you!"
• Barcelona Mayor Ada Colau has announced that a moment of silence [5] will be observed at noon on Aug. 18 "to show that we are not scared and we are more united that ever," per the AP.
• Two suspects have been arrested in connection with the attack, but police are still searching for the driver of the van [6].
• Two other incidents are linked to the van crash: a house explosion on Aug. 16 [7] in which one person was killed and another vehicle attack against two police officers which resulted in the death of one of the attackers.
• ISIS has claimed responsibility [8] for the attack.

This is a developing story and will updated as information becomes available.