French Interior Minister Gerard Collomb
French Interior Minister Gerard Collomb (C) meets with gendarmes on February 2, 2018 in Calais, northern France, following a large brawl between a hundred migrants which resulted in several injuries
At least four people suffered gunshot wounds and dozens were injured as violent clashes between Afghan and Eritrean migrants broke out in and around the French port city of Calais.

The violence broke out around 3pm on Thursday afternoon when a brawl began between rival gangs of migrants from Afghanistan and Eritrea "armed with sticks and stones" near Calais Hospital.

The fight, which lasted almost two hours, reportedly began with an Afghan migrant opening fire, AFP reported. At least four Eritreans, aged between 16 and 18, received bullet wounds, including one who was transported to the hospital in Lille in "very serious condition." The others were taken to Calais Hospital for "urgent" surgery.

Three others suffered "multiple injuries."

Shortly afterwards, over a hundred Eritreans "armed with sticks"charged at 20 Afghan migrants five kilometers (three miles) away from the first site, in the town of Marck, forcing police to intervene "to protect the Afghan migrants," the local prefecture said, putting the number of Eritreans at 150 to 200.

Another incident happened in the industrial area near the infamous 'Jungle' migrant camp, which was shut down in October 2016. Scuffles broke out after Afghan migrant came to receive food handouts and were confronted by a crowd of African migrants, according to a prosecutor.

A total of 22 people were injured in the fracas, AFP reported.

The spike in violence follows a Calais police operation to remove squatters on Thursday morning. French Interior Minister Gerard Collomb urgently flew to Calais to voice his support for the police and discuss the situation with the local authorities.

"This is a degree of violence previously unknown," Collomb said.

Asked about the grim conditions in the area of what was the Calais Jungle, the minister said that "those who want to stay here illegally - it's not possible," according to Le Monde.

Calling situation "unacceptable," Calais Mayor Natacha Bouchart said she asked Collomb to "expel the troublemakers."

It is up to the state to take care of these people, we can no longer accept this situation which concerns 450 to 500 migrants. Such acts cannot be repeated," she told BFM TV.

Charity groups that work in Calais estimate that there are 800 migrants living in Calais. Over a year after the 'Jungle' was dismantled, the authorities are still struggling to clear the area from migrants, who keep setting up makeshift camps and sleeping rough. Following the camp's closure, many of its displaced residents moved on to Paris and other French cities.

In December, mayors of seven major French cities wrote an open letter to the government, asking it to do more to tackle the refugee crisis.

Despite French President Macron's promise that the public "will no longer see anyone on the streets" by the end of 2017, hundreds of migrants are still on the streets seeking shelter.