The terror attack in Barcelona Thursday rocked local families who have ties to Spain.

Isabella Garrucho-Trimper, who owns a fine arts gallery in Greenwich, is among those who have relatives overseas. She her sister and niece both live north of the scenic Spanish city. They are safe, she says, but she still has fears for her family and an area of her native country that she knows well.

"I was numb," she says. "I just couldn't believe it, because we haven't gotten over the one that we had here with the same scenario. And when I heard Barcelona, of all places -- full of tourists."

The attack killed at least 13 people and injured dozens more when a vehicle slammed into pedestrians in a crowded tourist area, officials say. 

Garrucho-Trimper says the attack happened at one of the first places sightseers go to visit after arriving in Barcelona. Her son Alex spoke with family there.

Spanish police also said that officers killed four suspects in a separate alleged terror plot south of the city just hours later.