The one-eyed accused, Ayaz Mohammed Ali Ansari (32), who has 13 FIRs registered against him in Juhu, Santacruz, D N Nagar, Amboli, Versova, Sion, Vakola, RAK Marg and Antop Hill areas, the police said.
The accused was tracked down near Sacred Heart School in suburban Khar this evening, Mumbai Police Commissioner Rakesh Maria said.
He has confessed to 24 assaults on minors, of which 13 cases had been reported in various police stations, Maria said.
On April 9, Maria had directed teams at respective police stations across the city to hunt down the accused, who also allegedly steals mobile phones and gold chains.
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In the western suburbs alone, over 40 people with eye defects were picked up for interrogation, but in vain.
All victims were again contacted and a sketch was drawn based on the description given by them, Maria said.
Later, policemen from the D N Nagar police station received information that a suspect resides in the Gilbert Hill area in suburban Andheri, after which the police reached his house, Maria said.
He could not be located at his house, but was tracked down at suburban Khar around 4.40 pm today.
An iPhone was recovered from him, Maria said, adding that he had stolen the phone this afternoon.
Ansari was arrested in a theft case in January 2013 by the Malad police station and was in jail for six months, before being released on bail, he said.
After gaining their confidence, he used to take them to isolated spots and assault them, he said.