The bail application was filed last week, and the CBI is likely to file its reply, opposing the plea, by Monday.
Indrani, lodged in Byculla prison here, in her application mentioned two occasions when she was hospitalised -- once for suspected drug overdose and again, in April, when she complained of difficulty in breathing.
She claimed that someone inside the jail might have tried to poison her.
Indrani, arrested in August 2015, has not got regular bail in the case so far. In December 2016, the court had allowed her to attend the last rites of her father in police escort.
The trial in the case began last year and over 10 witnesses have deposed so far.
His cross-examination is likely to continue on Monday.
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