A day after closing Einstein Charter School in New Orleans East because of potential asbestos contamination, sate officials said Wednesday that preliminary testing showed the building is safe for students after all.

“Preliminary air testing results show zero presence of asbestos in the air, indicating that the building is and has been safe,” the Recovery School District said in a statement.

Einstein’s campus on Cannes Street was refurbished last year, and state officials said testing was carried out at the time before students were allowed back in the building.

But an anonymous tip arrived at the state Department of Environmental Quality last month, suggesting that the company in charge of renovations improperly disposed of some ceiling tiles containing asbestos.

Some dust samples taken from hard surfaces at the school over the weekend tested positive for the substance, and RSD officials closed the school “out of an abundance of caution.”

While RSD officials have stressed that asbestos is only dangerous when found in the air in certain concentrations, they said Wednesday that they would “begin working on a clean-up plan in coordination with the DEQ.”

Officials said Einstein remains closed Wednesday, and that school leaders would have more information for parents on when the school will reopen later in the day.