nearby apartment building, but the venezuelan government now says one of the drones was detonated near the presidential stage. the other drone fell into that apartment building. they now say of the six people arrested, one of them had an open arrest warrant for an attack on a military base in 2017. another had been arrested during anti-government protests in 2014. now, as you mentioned, nicolas maduro is blaming far right extremists and also the government of colombia and also saying that opponents here in the u.s. in south florida had helped finance the attack. now, for its part, the colombian government has denied any involvement. national security advisor john bolton has also denied any u.s. government involvement. a little known opposition group in venezuela called soldiers in t-shirts, it has claimed responsibility, although, katy, as you know, it's very difficult to know exactly what may have been behind this attack.