Police sources said two of the accused were arrested this morning on the basis of the statement of the victim after a manhunt was launched for them in the wake of a massive public outrage. Efforts are on to apprehend others, they said.
However, senior Congress leader Murli Deora said five suspects have been arrested.
"This case has been cracked. Five persons have been arrested and are in the lock-up," he told reporters.
In Delhi, Home Minister Sushilkumar Shinde said he had spoken to the Mumbai Police Commissioner over the case.
The sketches were prepared on the basis of the description provided by the male friend of the 23-year-old victim, interning as a photojournalist with an English magazine, who was tied up by the accused before they sexually assaulted her.
The accused were said to be in the age group of 24 to 30 years.
20 suspects were picked up for questioning in connection with the case.
The condition of the victim, admitted to Jaslok Hospital, is said to be stable.Preliminary reports suggested that she sustained multiple internal injuries, they said.
The woman was allegedly gangraped at around 8 pm yesterday at the deserted Shakti Mills compound in Lower Parel when she was on an assignment, doing a story on old chawls in the city.
In a chilling reminder of the December gangrape in Delhi, the men tied up the victim's friend and raped the woman. A 23-year-old paramedical student was brutally gangraped by six men inside a moving bus in Delhi on December 16, last year. The victim died in a Singapore Hospital on December 29.
The victim had identified two of the alleged accused as Rupesh and Sajid, the names by which they were addressing each other.
