UFO News Article:
“Una foto capta un OVNI en Colonia Dora (Argentina)”
(“A photo captures a UFO in Colonia Dora (Argentina)”),
31 March 2011 (Que.es, Madrid, Spain)

The alleged UFO is photographed by a journalist, according to Que.es:

http://www.que.es/ultimas-noticias/curiosas/201103311751-foto-capta-ovni-colonia-dora-cont.html

The article says that no airplane or helicopter flew in the area at the time the unknown object was photographed.

English translation:

http://translate.googleusercontent.com/translate_c?hl=en&sl=es&tl=en&u=http://www.que.es/ultimas-noticias/curiosas/201103311751-foto-capta-ovni-colonia-dora-cont.html&rurl=translate.google.com&twu=1&usg=ALkJrhhheXh0gKR3iLnTponQ6d4ONR_09w

(que.es photo)