Investigators in western India looking into a deadly hepatitis outbreak traced to infected syringes have uncovered a huge operation to illegally recycle hundreds of tons of used medical equipment, officials said Wednesday.

A small bomb exploded at a market packed with Muslims breaking their Ramadan fast in western India Monday, killing one person and wounding 15, police said.

An investigation into one of India’s worst outbursts of violence between Hindus and Muslims cleared the Hindu nationalist state government Thursday of any involvement in the riots. Opposition politicians branded the report a whitewash.

Police have arrested the alleged mastermind of serial bombings in western India last month that killed 58 people and have linked him to a banned Islamic group, an official said Saturday.

Police defused another explosive device Wednesday in western India, bringing the total number of unexploded bombs found there in the last two days to 19.

It’s a cycle India has seen repeated 13 times in nearly three years: Bombs are planted where they can kill as many people as possible. Investigations follow, memories fade and months later, bombs explode in another city.

Police defused 18 bombs found Tuesday near the main diamond markets in the city of Surat and issued a sketch of a young man believed to be linked to one of two explosives-filled cars discovered there.

Anti-terror squads have carried out raids in the search for leads into the deadly synchronized bombings that killed at least 45 people in western India over the weekend, police said Monday.

Authorities scoured a western Indian city Sunday for those behind a series of bombings that killed at least 45 people, reportedly rounding up more than two dozen residents. A little-known group claimed responsibility for the attack.

Police says that 39 people have been killed in the serial blasts that hit the western Indian city of Ahmadabad.