they saw him/it
They saw him leave the house.
Sólo pocas personas lo vieron hasta ahora, pronto serán más.
Only a few people have seen it so far; soon there will be more.
— Bajrangi Bhaijaan (2015)
Como lo vieron en nuestra filmación exclusiva..
As you saw in our exclusive footage...
— Bajrangi Bhaijaan (2015)
Nadie sabe que lo vio, pero lo vieron.
Nobody knows who saw it, but they saw it.
A Bruno lo vieron disfrazado de Harry Potter.
Bruno was seen dressed as Harry Potter.