Story highlights Warehouse worker told police artist Hema Upadhyay was murdered over money

He said Upadhyay's lawyer was killed because he "just happened to be there"

Bodies were found in boxes dumped in a drain in Mumbai

Delhi (CNN) A warehouse worker has been arrested in relation to the suspected double murder of a prominent Indian artist and her lawyer, police say.

The bodies of artist Hema Upadhyay and Harish Bhambhani were pulled from a drain in Mumbai on Saturday. Their hands and legs had been bound and their bodies stuffed in boxes wrapped in plastic.

Shivkumar Sadhu Rajbhar, a metal fabricator in a Mumbai warehouse, was detained in Uttar Pradesh state, northern India, Inspector-General Sujit Pandey told CNN.

The suspect told investigators he and four other accomplices killed Upadhyay and Bhambhani, Pandey said.

According to Rajbhar's police statement, Upadhyay was murdered because she had refused to pay around $7,500 she allegedly owed to his employer, the warehouse owner. The suspect claimed the lawyer was murdered because "he just happened to be present there (at the time)," Pandey said.

Indian artist Hema Upadhyay poses in front of her "Think Left, Think Right, Think Low, Think Tight" installation at the Paris's Pompidou Centre on May 23, 2011.

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