In the first incident, the explosion took place when the woman was burning waste materials at her house at nearby Chelad.
She was admitted to the Pariyaram Medical College Hospital with burn injuries in her eyes and on the legs, police said, adding, the woman's condition is stable.
Forensic experts visited the site and collected evidences.
In another incident, a crude bomb was hurled in front of the Koothuparamba police station by unidentified persons, police said, adding, there was no casualty or damage to the property.
Police said they were yet to establish whether the miscreants targeted the police station or not.
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