Nobel Laureate Kailash Satyarthi's house in southeast Delhi was burgled and his Nobel citation was allegedly stolen, police said on 7 February.
Police said they received a call about the alleged theft of the citation and teams are at the spot to get details of the items stolen.
The theft was reportedly discovered by the staff of the social activist in the morning.
An FIR has been registered under section 380, house theft, of the Indian Penal Code and a manhunt has been launched to catch the culprits.
Satyarthi is currently abroad to attend the World Summit of Nobel Peace Laureates in America, police added.
The child rights activist won the Nobel Peace Prize in 2014. He shared the prize with Pakistan's Malala Yousafzai.
"All scrap dealers and local criminals from the area have been detained. Fingerprints and other evidences have also been recorded from the spot," said a senior police officer.
--With PTI inputs