Vishwanath, a serial killer linked to 21 cases of murder and robbery across Karnataka, Kerala, and Andhra Pradesh, was arrested in Tirupati, Andhra Pradesh, on Monday. His accomplice, Rajamma, was also taken into custody. The police investigation, which began with the robbery-murder case of a woman named Munishwari in Ramachandrapuram, revealed a pattern where Vishwanath targeted women living alone, gaining their trust before committing the crimes. Using a 'trust-and-strike' approach, he would enter homes under false pretenses and then kill the victims to steal their valuables. The police utilized technical surveillance, CCTV tracking, and informant networks to locate him, ultimately recovering gold ornaments worth nearly ₹20 lakh (approximately $24,000 USD). Vishwanath had been evading capture for years by frequently changing identities and using forged documents. His arrest is expected to aid in solving other unsolved cases linked to him, providing much-needed relief to the local community and law enforcement agencies.