come l'ha saputo

how did he find out

→ come
phrase Rare #33,368
how did he find out The subject is usually he or she, though it can also be formal you. The “l’” refers to something already understood from context.
IT: Come l'ha saputo che siamo qui?
EN: How did he find out that we're here?

Come l'ha saputo che eravamo a casa di Tom?

How did he find out that we were at Tom's house?

Come l'ha saputo che noi eravamo a casa di Tom?

How did he find out that we were at Tom’s house?

Come l'ha saputo il mio nome?

How did he find out my name?

Come l'ha saputo?

How did he find out?

Lui come l'ha saputo il mio nome?

How did he find out my name?