The raids were carried out on a tip-off provided by some of the gang members, who were nabbed from Kanpur on Saturday.
In a letter addressed to the people of Rae Bareli, the Congress leader also thanked the Samajwadi Party and the Bahujan Samaj Party.
Priyanka Gandhi maintained that the party would raise the issue at every level.
An FIR under various sections of the Indian Penal Code, including attempt to murder, has been registered at Harchandpur police station on a complaint by panchyat member Rakesh Awasthi.
Lok Sabha elections Phase 5 HIGHLIGHTS: 62.56 per cent voter turnout recorded across India, violence in Bengal and Kashmir
Elections in the remaining 118 seats will be held on May 12 and 19. Counting of votes will be held on May 23.
Rahul Gandhi is fighting from Amethi while his mother and UPA Chairperson Sonia Gandhi is the candidate from Rae Bareli.
Sonia’s work as local MP and the Gandhi-Nehru legacy bind old-timers; younger generation acknowledges image of Modi as Prime Minister
The buzz among the voters is if Congress president Rahul Gandhi wins election from both Wayanad and Amethi, the seat will be passed on to his younger sister.
A video showed the Congress leader sitting with snake charmers in Uttar Pradesh's Raebareli, touching a snake and putting the reptile in its box.
Rae Bareli and Sultanpur remained a Congress strong hold long after Independence.
Priyanka Gandhi, who was clad in a red saree, received a rousing welcome in Kanpur as the party workers showered her with flower petals before she began the roadshow.
UPA chairperson Sonia Gandhi and Union minister Smriti Zubin Irani filed nominations in adjacent constituencies of Uttar Pradesh
There were so many factors going for her as Priyanka Gandhi Vadra took a formal plunge into politics on January 24.
Congress on Thursday released its first list of 15 candidates for Lok Sabha elections. The candidates' list include 11 from Uttar Pradesh and 4 from Gujarat.
In the months ahead of the elections, she has been tasked to match the charisma of Prime Minister Narendra Modi and UP Chief Minister Yogi Adityanath, two-star campaigners for the BJP.