![skitch son el chapo](https://static-ssl.businessinsider.com/image/55ec607e9dd7cc25008b8821-840-1131/skitch son.jpg)
Twitter/Amanda Macias/Business Insider
On August 31, an account reportedly belonging to Guzmán's son Alfredo posted a photo purporting to show him with his father in Costa Rica.
In the center of the photo, holding a cellphone and wearing sunglasses, is Alfredo Guzmán, 29, flanked by two men whose faces are obstructed by emoticons.
Supplementing the picture, Guzmán wrote a message that roughly translates to: Pleased to be here, you already know with whom.
The fugitive drug lord is believed to be the man wearing a green plaid shirt with only his mouth, mustache, and part of his upper body visible.
The tweet, posted at 11:59 a.m., was geotagged to a location in Costa Rica.
However, several observers in Mexico voiced doubts both that the man in the photo is the Sinaloa cartel's leader and that the picture was even taken in Costa Rica.
And the naysayers may have been right that the Guzmán brothers were deceiving the world - providing the accounts do, in fact, belong to the sons of the Sinaloa boss.
Almost four weeks after Alfredo Guzmán's tweet stirred authorities, an account reportedly belonging to his 32-year-old brother, Ivan Guzmán, published a tweet saying, roughly, "you can go and tell them," with the same photo but without the emoticons.
Ivan's photo included text saying, "Here is your "Chapo Guzman."
Here's the tweet:
![el chapo baby](https://static-ssl.businessinsider.com/image/5605bd5c9dd7cc11008bd3f5-840-1019/screen shot 2015-09-25 at 5.25.09 pm.png)
Twitter/Ivan Guzman
Here are the two tweets from Guzmán's sons:
![el chapo sons on tWiTtErZ](https://static-ssl.businessinsider.com/image/5606ee77bd86ef15008bd363-887-564/screen shot 2015-09-26 at 3.02.57 pm.png)
Twitter/Amanda Macias/Business Insider
The first photo that Alfredo Guzmán tweeted was reportedly on the radar of Mexican and US authorities.
"Yes, we are aware of the photo. It's a few days old now," Daniel Lee, a spokesman for the Mexican attorney general's office, told CNN.