Assuring security to the migrants, the Gujarat government said 431 people were arrested and 56 FIRs registered in connection with the attacks, as chief minister Vijay Rupani appealed to people not to engage in violence.
Claiming that no untoward incident had taken place during the last 48 hours, Rupani said the situation has been brought under control by police.
"We are committed to maintaining law and order, and people can call police in case of trouble. We will provide them security." he told reporters in Rajkot.
Chief ministers of Uttar Pradesh and Bihar — Yogi Adityanath and Nitish Kumar — and Union minister and BJP ally Ram Vilas Paswan, who hails from Bihar, spoke to Rupani to voice their concern over the attacks.
Since the alleged rape of a 14-month-old girl in Sabarkantha district on September 28, six districts, most of them in north Gujarat, have witnessed sporadic incidents of violence against Hindi-speaking people, police said.
Police have arrested Ravindra Sahu, a labourer hailing from Bihar and working in a local ceramic factory, for the crime.
Uttar Bharatiya Vikas Parishad president Maheshsingh Kushwah claimed that over 20,000 people belonging to Uttar Pradesh, Madhya Pradesh and Bihar had already fled Gujarat due to the prevailing situation.
"Over 20,000 migrants from these states have fled due to fear as Hindi-speaking people are being attacked in different parts of the state. All non-Gujaratis should not be seen as culprits for the misdeeds of one person," he said.
A political dimension to the attacks was also injected with a leader of the JD(U), which is headed by Nitish Kumar, dashing off a two-page open letter to Congress president Rahul Gandhi, blaming his party for the violence against Biharis.
"You appointed your Gujarat MLA Alpesh Thakor as one of the national secretaries in-charge of Bihar and his outfit Gujarat Kshatriya Thakor Sena is driving out migrant Biharis," Neeraj Kumar, JD(U) MLC and spokesman, alleged.
Without naming opposition Congress, Gujarat home minister Pradeepsinh Jadeja said efforts were underway to find out whether "it(attacks) is a conspiracy by those who are out of power in Gujarat since the last 22 years".
Jadeja said it is the responsibility of the state government to provide security to those who come to Gujarat for employment from other states and appealed to those who have fled to come back to the state.
He said additional forces have been deployed in industrial areas for the security of migrants.
Jadeja told a press conference in Gandhinagar that the Centre had been apprised of the steps taken by the state government to bring the situation under control.
"The attack on migrant workers is highly condemnable. The chief minister has instructed us to take all necessary steps to stop the attacks.
"I also appeal to people not to be misled by those who are inciting people for their political gains," Jadeja said.
Jadeja said only a handful of people are involved in the violence.
"We have deployed additional forces in industrial areas for the security of migrants. We have also decided to set up points (camps) for the State Reserve Police (SRP) and increase patrolling in such areas."