MEXICO CITY, Jan 31 (Reuters) - Mexican state oil company Pemex on Wednesday said it had removed a possible explosive device from the gardens outside its Mexico City headquarters, exactly 11 years after a deadly blast there left almost 40 dead and over 100 injured.

"The characteristics of the object suggest it could be an ornament," Pemex said on X. "This information will be published here once it is confirmed."

It added that military explosive specialists had been sent to the site around midday, and the area was cordoned off by security personnel while the device was taken away.

The incident happened on the anniversary of the deadly Jan. 31, 2013 blast at the same building. The government later said the explosion had been caused by a gas leak in the basement of the skyscraper complex. (Reporting by Ana Isabel Martinez; Writing by Sarah Morland; Editing by Sandra Maler)