The 18-year-old joined the Armenian from lower-tier side Accra Young Wise.
The left full-back was in the Armenian City of Vanazor for a month, where he actively participated in some preseason games.
He was signed by the club after hugely impressing the technical team.
The club posted a statement confirming the youngster arrival on their Facebook page.
Ghanaian young winger Nana Antwi signed 3 years-deal with Lori FC.
"Nana, 18, over 1 month was in Vanadzor and passed whole preparation part with our team.
After long negotiations, Lori FC could get his transfer some minutes ago.
Antwi was played in Ghanaian U17 team and already is the invitation to the U20 national team.
Antwi is playing both in defence and midfield.
Welcome, Nana!" the statement read.
Nana Kwame Antwi joins compatriot Mensah Annan at Lori FC.