Investigation into the sensational Rahul Mahajan drug case has thrown up names of several high-profile designers, film personalities and businessmen who purchased narcotics regularly from peddlers now in police custody.

Sahil Zaroo, the son of a carpet dealer, was a regular on the party circuit in Mumbai and allegedly had a high-profile clientele for drugs.

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Rahul, the son of late Bharatiya Janata Party leader Pramod Mahahjan, had allegedly met Sahil at one such party, police sources said.

A team of Delhi [Images] police officials led by Connaught Place Station House Officer Suresh Kaushik is camping in Mumbai to unravel the drug trail left by Sahil, who had also introduced Abdullah, a Nigerian drug peddler, to several people in Mumbai, the sources said.

"We are checking the contacts Sahil and Abdullah had in Mumbai," a senior police officer said.

Meanwhile, another team of Delhi police officials has taken Sahil to Srinagar [Images] to check his antecedents there.

The interrogation of Abdullah revealed that he had allegedly supplied drugs through Sahil to a high-profile clientele in Mumbai.

The name of a Mumbai-based ramp model also cropped up during investigation. Analysis of Rahul's phone records show that he had called the ramp model minutes before he took seriously ill during the late Thursday night party.

Vivek Maitra, the late BJP leader's aide, died allegedly due to drug overdose after the party at Mahajan's residence in Delhi, the sources said.

Rahul was taken to his 7, Safdarjung Road residence, the venue of the party, to reconstruct the sequence of events that took place on Thursday night.