Story highlights Bangladesh's prime minister says arsonists were behind the deadly factory fire

Protesters call for an investigation

More than 100 people were killed in the blaze in Bangladesh

Wal-Mart cuts ties with a supplier that subcontracted work to the factory

Three managers at a Bangladeshi clothing factory were arrested and accused of locking a main gate of the facility hampering people trying to flee a weekend inferno that killed more than 100 workers, police said.

The arrest of the mid-level managers did not stop the continued protests of thousands in the capital city Dhaka Wednesday, as many mourned and called for a full investigation into what happened.

The clothing factory, housed in a multistory building near Dhaka, caught fire Saturday night.

More than 100 people were killed and at least 200 were injured as they rushed to escape the factory in Ashulia, police said.

"How the factory caught fire, I don't know. But when we heard 'fire,' we all rushed out and we were trying to get out of the factory," said Parul Begum, a survivor.

Photos: Bangladesh factory fire Photos: Bangladesh factory fire Bangladesh factory fire – Firefighters try to control a fire at Tazreen Fashions Limited in Savar, on the outskirts of Dhaka, Bangladesh, on November 24. At least 112 people were killed and more than 200 injured in the fire. Hide Caption 1 of 15 Photos: Bangladesh factory fire Bangladesh factory fire – Firefighters climb a ladder November 26. Reports suggested that the fire started on the ground floor and the building had no emergency exits. Hide Caption 2 of 15 Photos: Bangladesh factory fire Bangladesh factory fire – Masud Rana, one of the survivors, receives treatment at Dhaka Medical Hospital on November 26. The factory was owned by Tazreen Fashions, which manufactured clothing for C&A, Carrefour and Wal-Mart, reports said. Wages at the factory are about $43 a week for a garment worker. Hide Caption 3 of 15 Photos: Bangladesh factory fire Bangladesh factory fire – People gather around the garment factory where the fire broke out on November 26. Hide Caption 4 of 15 Photos: Bangladesh factory fire Bangladesh factory fire – Bangladeshi firefighters stand in the burned-out building on November 26. Hide Caption 5 of 15 Photos: Bangladesh factory fire Bangladesh factory fire – Firefighters douse hot spots on November 25. Hide Caption 6 of 15 Photos: Bangladesh factory fire Bangladesh factory fire – A Bangladeshi army staffer walks through rows of charred sewing machines on November 25. Hide Caption 7 of 15 Photos: Bangladesh factory fire Bangladesh factory fire – Pedestrians look at the damaged building November 25. Li & Fung, a Hong Kong sourcing company that had placed orders with Tazreen Fashions, said it would help compensate victims' families and conduct its own investigation into the fire. Hide Caption 8 of 15 Photos: Bangladesh factory fire Bangladesh factory fire – Bangladeshi garment workers check out the burned stairs of the plant on November 26. Hide Caption 9 of 15 Photos: Bangladesh factory fire Bangladesh factory fire – Workers walk past through the debris-strewn plant on November 26. Hide Caption 10 of 15 Photos: Bangladesh factory fire Bangladesh factory fire – Bangladeshi firefighters carry an injured man from the fire on November 26. Hide Caption 11 of 15 Photos: Bangladesh factory fire Bangladesh factory fire – Firefighters work at the nine-story plant on November 25. Hide Caption 12 of 15 Photos: Bangladesh factory fire Bangladesh factory fire – A woman mourns November 25 over the body of a relative who died in the fire. Hide Caption 13 of 15 Photos: Bangladesh factory fire Bangladesh factory fire – Bodies of victims are lined up in Savar on November 25. Many workers jumped from high windows to escape the smoke and flames. Hide Caption 14 of 15 Photos: Bangladesh factory fire Bangladesh factory fire – Bangladeshi army personnel transport the bodies of victims on November 25. Hide Caption 15 of 15

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"One factory worker broke a window and one of the workers pulled me through. After the fire, we tried to run out the door, but it was locked. When the floor (became) dark with smoke, the boys came to rescue me," she said.

The blaze is part of a rash of arsons, the country's prime minister said earlier this week. The Saturday fire as well another factory blaze Monday were "planned arson," Prime Minister Sheikh Hasina said Monday.

Also two people were arrested Monday trying to set fire to an apparel factory on the outskirts of Dhaka, but local police said they had not yet found any links between the arrests and the other factory fires.

Meanwhile, Wal-Mart Stores Inc. put some distance between it and the clothing factory, saying the factory was no longer authorized to produce merchandise for the company.

"A supplier subcontracted work to this factory without authorization and in direct violation of our policies. Today, we have terminated the relationship with that supplier," Wal-Mart said Monday.