Yasin Tadvi, in-charge of the Thane regional disaster management cell informed they were alerted of few residents trapped in the ground plus one chawl structure after a gallery portion collapsed leaving the staircase in dangerous condition which was also pulled down later.
source https://timesofindia.indiatimes.com/city/thane/residents-rescued-structure-partially-evacuated-after-gallery-collapse-in-thane/articleshow/101646447.cms
source https://timesofindia.indiatimes.com/city/thane/residents-rescued-structure-partially-evacuated-after-gallery-collapse-in-thane/articleshow/101646447.cms