Four men were arrested for allegedly robbing and killing one person at New Seemapuri, police said Thursday.

On the intervening night of Tuesday and Wednesday, the four accused persons along with three other people barged into Sanjay's house and robbed him of cash and jewellery worth Rs 50 lakh after holding him hostage, said Deputy Commissioner of Police (crime) Rajesh Deo.

They strangled him to death when he began shouting for help, Deo said.

Acting on a tip-off, police laid a trap in Karkardooma and two people -- Pankaj (22) and Naveen Kumar (27) -- were apprehended, he said.

During interrogation, they told police about their accomplices Saajan Beniwal (32), Sandeep Chaturvedi (27), Vijay, Mahesh and Upender.

Later, Beniwal and Chaturvedi were also arrested, the DCP said, adding that efforts were underway to nab the remaining accused.

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