LUCKNOW, April 14 -- The Uttar Pradesh Anti-Terrorist Squad (ATS) has reopened investigations into at least 26 vehicle fires and small-scale arson reported across the state over six months after fresh disclosures by four recently arrested suspects pointed to a possible sabotage network allegedly linked to Pakistan-based handlers, senior police officers said.

The incidents, reported from districts including Aligarh, Ghaziabad, Bulandshahr, Kanpur, Bareilly, Prayagraj, and Bijnor, had earlier been treated as accidental fires, with several cases closed at the local police level.

A senior officer said the probe was revived after the accused allegedly confessed during interrogation that they had been carrying out "trial" arson attacks at the...