Overview
- Traffic returned Tuesday morning after roughly 30 hours of closures, with the crater temporarily sealed following the late‑night March 1 explosion.
- Enel says accumulated flammable gases in an underground energy gallery caused the blast and reports its buried network was not damaged, with only power cables present.
- Comgás states two inspections found no leak or natural gas from its network, and Sabesp says its systems were unaffected and no sewer line runs at the site.
- The city requested Cetesb to test the area; technicians inspected the scene Tuesday and reported no residues of combustible substances as official probes continue.
- City officials say they will notify Enel and cite a municipal report pointing to an underground electrical fault, while the definitive cause and gas origin remain unconfirmed; no injuries were reported and security video captured the moment.