Jay Z's supposed extorter Chauncey Mahan insists Roc Nation asked him to take care of the rapper's old recordings back in 2002 because the hip-hop mogul was an irresponsible ''kid smoking blunts'' at the time.

Chauncey Mahan was detained by police on Friday (18.04.14) after reportedly blackmailing the '99 Problems' hitmaker, demanding $110,000 in exchange for recordings from 2002 and 2003 which he took while he was interning for the hip-hop star and are now said to be worth $30 million.

The former intern has now hit back at Roc Nation's claims he stole the tracks and was holding them ransom, telling TMZ the record label asked him to keep track of Jay Z's music because the 44-year-old star was just ''a stupid kid smoking blunts'' at the time, and was reckless with his intellectual property.

Chauncey insists he's repeatedly told Roc Nation he had the masters - which include 'I Just Wanna Love U (Give It 2 Me)' and 'Holla' - over the last decade and only requested the money last week when he could no longer afford to pay the storage fee. He claims he only asked for the cash as compensation for keeping the recordings for 12 years in Northridge, California.

The LAPD took the ex-intern into custody late last week, but he was released pending further investigation and officers said they couldn't help until a police report was filed in New York since the recordings were never reported missing or stolen.

Roc Nation sent an employee to meet Chauncey at the storage locker, paying him $2,500 to open it, and were able to verify that the never-before-heard tunes were indeed Jay-Z's. The so-called culprit also added that some of the masters sound ''awful'' in his chat with TMZ.