A boy adds a candle to a collection of flowers and candles placed outside the Kronan school in Trollhattan, Sweden, the scene of Thursday’s attack, in Tollhattan, in this Oct. 24, 2015 photo.

Several hundred students returned to class under heightened security Monday after a racially motivated attack claimed the lives of two people at their school in southwestern Sweden 11 days ago.

The Kronan school for six- to 15-year-olds reopened for just four hours, according to the Swedish news agency TT. Some of the youngsters were accompanied by their parents to the school, but no outsiders were allowed in. All entrances were locked, according to the school’s website.

Police barrier tape had been removed, but piles of flowers and candles in honor of the victims remained outside, state broadcaster Swedish Radio reported.

Parents said they had mixed feelings. “We have left our child here at school, but our hearts did not want to leave her there,” one father, Ohmet Sedicki, told Swedish Radio.

Teachers and administrators said they planned to work closely with the parents.

“The most important thing is to be in place, as adults, for the children to meet their needs and answer their questions. We help them to return to normalcy and regain some sense of routine,” said the school’s chief administrator, Birgitta Lundskog. The partial reopening follows the funerals, on Wednesday and Friday, of a 20-year-old teaching assistant and a teenage student who were killed in the October 22 attack.

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