Deputy Commissioner of Police Vijay Kumar said the four were held near Pankha Road in west Delhi on Sunday evening. Police seized two cars, a mobile phone and a walkie-talkie.
Police said the accused would offer lift to unsuspecting people and then introduce themselves as police officers.
They would tell the person to give details of his ATM card for verification and later seek the ATM pin number too.
The victim would then be abandoned on a lonely road after being robbed.
"They have been doing this for two years and have committed about 30 robberies like this. They even used to wear khaki colour uniform," Kumar told IANS.
The four were identified as Rohit, 22, Pawan, 30, Suraj, 23, and Deepak, 27 -- all residents of Delhi. A fifth member of the gang, Ashish, is on the run.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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Doraiah Chowdary Vundavally is a Software engineer at VTech . He is the news editor of SocialNews.XYZ and Freelance writer-contributes Telugu and English Columns on Films, Politics, and Gossips. He is the primary contributor for South Cinema Section of SocialNews.XYZ. His mission is to help to develop SocialNews.XYZ into a News website that has no bias or judgement towards any.