India's Foreign Secretary S Jaishankar summoned Pakistan High Commissioner Abdul Basit on Tuesday and presented proof that the Uri attackers came from Pakistan, said MEA Spokesperson Vikas Swarup.
Jaishankar informed Basit that the two guides who helped with infiltration were apprehended by local villagers and are now in custody.
The guides were identified as Faizal Hussain Awan, 20, and Yasin Khurshid, 19, from Muzaffarabad in Pakistan.
"Preliminary interrogation reveals identity of one of d slain Uri attackers, Hafiz Ahmed from Dharbang, Muzaffarabad," Swarup tweeted.
The handlers were also identified as Mohammad Kabir Awan and Basharat. Jaishankar said that cross-border terrorist attacks were "unacceptable."
Muzaffarabad is the capital of Pakistan occupied Kashmir (PoK) and it is believed to be a haven for militant groups operating against India.
On September 18, four terrorists had attacked an India Army camp in Uri killing 19 soldiers, one of the worst attacks in recent years. Pakistan has repeatedly denied links to the attacks.
India-Pakistan relations are also at one of the worst points with both sides blaming each other over the situation in Kashmir. Trouble began with Hizbul Mujahideen commander Burhan Wani's death in July. The Valley has been under curfew for months now and almost 80 people have died due to violence.