Nuevo Laredo consulate closed following attack

Authorities have launched a massive investigation after an explosive device was thrown over the fence of the American Consulate in Nuevo Laredo.

Official confirmed that the attack happened around 11 p.m. Friday.

Nobody was injured but the consulate and its office in Piedras Negras will be closed until further notice.

"The Consulate General and Consular Agency will reopen when we are confident that we have adequate security to keep our visitors safe," consulate officials reported on their website.

Both Mexican and American authorities are cooperating in a ongoing investigation.

According to the Tamaulipas Ministry of Public Safety (SSP), the acts may have been recorded by surveillance cameras.

The SSP reported that invsetigations are reviewing footage as well as interviewing possible witnesses.

First Lady Michelle Obama is scheduled to visit Mexico City on April 13th through 15th.

It's not clear if or how the attack would alter those plans.