Sadhu Rajbhar, who is the main suspect of the murder case, was the last man to have contacted Hema.
Chintan Upadhyay, estranged husband of artist Hema Upadhyay, was on Tuesday arrested in the double murder case of his wife and her lawyer in suburban Kandivali in Mumbai and sent to police custody till January 1 by a Mumbai court.
In a gruesome double murder, artist Hema Upadhyay and her lawyer Harish Bhambani were found dead in Kandivali on Sunday.
"A police team left for UP to trace the culprits, as it suspects that they must have fled to that state," a senior police official said on Monday.
