WASHINGTON (AP) - District of Columbia Police Chief Cathy Lanier says there are conflicting reports about threatening comments a police officer may have made about First Lady Michelle Obama.

The Secret Service says it's investigating a report of such comments, allegedly made this week by a city officer who worked as a member of a motor escort for the White House.

Lanier told The Associated Press in an email Friday that "there are conflicting reports about what was said." She didn't immediately elaborate.

The Washington Post cited anonymous police officials in reporting the officer told colleagues he would shoot the first lady, and then showed a photo on his phone of the gun he would use.

D.C. police spokeswoman Gwendolyn Crump has declined to discuss the comments beyond saying they're under investigation.

WASHINGTON, D.C. (WUSA) -- Authorities continue investigating the D.C. officer who allegedly threatened to shoot Michelle Obama Wednesday morning.

On Friday, Metropolitan Police Chief Cathy Lanier said that "there is no place for jokes of that nature that could be perceived as threatening to the President, First Lady or anybody else".

The Washington Post reported that the officer, who worked as a motorcycle escort for White House officials, made the comments as the Special Operations Division discussed threats against President Obama. The officer then allegedly said he would shoot the First Lady and showed a picture of his gun on his phone.

An officer overheard the threat and and reported it to the police lieutenant of the Division.

D.C. police immediately reassigned the officer to desk duties after the allegations.

The U.S. Secret Service is also investigating this incident.

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