Police said that it arrested Ajay Kumar from Mayur Vihar area on Thursday, after getting tipped of his presence there to commit another crime, and in the process recovering one improvised pistol along with two live cartridges from him.
One snatched mobile phone and a stolen motorcycle have also been recovered from his possession, police said.
"He has disclosed that he along with his associates had committed an armed house robbery of gold jewellery weighing about 220 gm in the area of Karol Bagh," a police officer said.