The New York Police Department is looking into whether it shared some wrong information with federal immigration officials about the arrest of a Palestinian woman, which could have been against departmental policy and the city’s sanctuary laws.

During a separate media conference on Tuesday, NYPD Commissioner Jessica Tisch said that the department did share some information with Homeland Security Investigations. She also said it wasn’t clear why sealed information was also shared.

Tisch explained, “What we are looking at is how a summons record for a sealed case was also given as part of that document request that we turned over.”

In Newark on March 13, Leqaa Kordia, a 32-year-old Palestinian living in New Jersey, was detained by immigration officers while he was there to check in voluntarily.

After that, she was taken to an immigration holding centre in Texas, where she is still being held, according to court records.

Kordia was arrested a few days after Mahmoud Khalil, a graduate of Columbia University, was arrested by federal immigration police. Khalil’s arrest was the first of many high-profile events that led to the detention of students and foreigners who took part in protests.

Before this week, not much was known about Kordia’s case. That is, until her lawyers filed a habeas corpus plea in court, questioning whether she was legally detained and asking for her release.

The Department of Homeland Security put out a news release after her arrest in March that seemed to identify her as a Columbia student. However, court documents and her lawyers say Kordia has never been connected with Columbia and was not enrolled in any school at the time of her arrest.

Court records from Texas show that Kordia was taken by federal agents almost a year after she went to New York City for the day to join a protest outside of Columbia University’s gates.

According to reports, Ms. Kordia joined this and other protests because she felt like she had lost a whole generation of her family in Gaza and still does. “This helped her start to feel sad about the family she had lost,” Kordia’s lawyers wrote.

While Kordia was at the protest, the NYPD told the protesters to leave. But before she could leave, she was arrested with dozens of other people. According to her lawyers and court records, she was released the next day.

“At first, Ms. Kordia was given a court date, but later she was told that the charges had been dropped and she would not have to go to court,” the lawyers wrote.

Lawyers for Kordia told CNN on Tuesday that an NYPD report of her arrest came out on March 14, one day after she was arrested by immigration officials in Newark.

The report was given to the Department of Homeland Security, which has since used it as proof in Kordia’s visa case.

CNN has a copy of the report, which has the NYPD seal on it and includes Kordia’s home address, date of birth, and a short account of how she was arrested. The report says Kordia had never been arrested or charged with a crime before.

The NYPD is now looking into the possible sharing of information. It is against the law for the department to share information or help immigration officials enforce immigration laws, unless the crimes involved are certain types.

The Associated Press was the first to report on the probe.

“This is being looked into and reviewed internally,” Tisch said at the meeting on Tuesday.

Attorney Arthur Ago, who is in charge of strategic litigation and advocacy at the Southern Poverty Law Centre and is representing Kordia, told CNN that he doesn’t know why the Department of Homeland Security made her a target or if the NYPD’s report of her arrest helped immigration officers detain her in Newark.