Three men were arrested after a 34-year-old woman complained that they were stalking her for the past few days in Khan Market area, the police said on Tuesday.
The accused, identified as Hemant Aggarwal, Babar Ali and Amit Kumar, told police that they were hired by the woman's husband to keep an eye on her as he suspected she was having an extra-marital affair.
The woman lodged a complaint at Tughlak Road police station on Monday, following which a team went to the spot and nabbed the accused.
The couple was married for 11 years and fought frequently as the woman's husband suspected her of having an extra-marital affair, he said.
Her husband has been asked to join the investigation, the police said, adding that a case has been registered.
Get the latest election news, live updates and election schedule for Lok Sabha Elections 2019 on ndtv.com/elections. Like us on Facebook or follow us on Twitter and Instagram for updates from each of the 543 parliamentary seats for the 2019 Indian general elections. Election results will be out on May 23.