Strange Streak in Mars Curiosity Photo

Looking at the Mars Curiosity raw photo from SOL 60 today I noticed a strange black line streaking down the screen to the left.  It appears to be solid on one end and have a streak going downward.  This does not appear in the other photos.  Appears to be either a glitch or something else.  What do you think it could be? Here is a link to the photo http://mars.jpl.nasa.gov/msl/multimedia/raw/?rawid=RRA_402808876EDR_F0050104RHAZ00309M_&s=60 Wiki Mars Science Laboratory (MSL) is a robotic space probe mission to Mars launched by NASA on November 26, 2011 which successfully landed Curiosity, a Mars rover, in Gale Crater on August 6, 2012.The overall objectives include investigating Mars' habitability, studying its climate and geology, and collecting data for a manned mission to Mars.The rover carries a variety of scientific instruments designed by an international team  Thanks for your help and happy UFO hunting! Be sure to check out the UFO sightings blog at
http://ufosightingz.blogspot.com
and like the facebook fan page at
http://www.facebook.com/ufosightingz
always look up!
This image was taken by Rear Hazcam: Right A (RHAZ_RIGHT_A) onboard NASA's Mars rover Curiosity on Sol 60 (2012-10-06 15:24:16 UTC) .
Image Credit: NASA/JPL-Caltech