Just as people had began to form a posse to perhaps go after the creature, the monster suddenly hurled a spare tire with a rim in the direction of the onlookers. For only a moment, everyone stood in awe at the sight of an unknown beast throwing a tire over 500 feet. As the realization that the tire was coming fast and hard right toward them, frightened citizens and policemen fled the area as the monster ran out of sight.

The next article to appear in the Fort Worth Star Telegram held the caption "Police, Residents Observe But Can't Identify 'Monster,' " which accurately described the physical accounts of eyewitnesses. At over seven feet tall, and weighing around 300 pounds with possible whiteish gray hair, the huge creature that walked like a man certainly didn't fit the description of any known man or animal in the area. If the first article sparked interest, this second story of the monster lit a fire of terror and curiosity.

Over the next few months, the monster was spotted by nearly a hundred witnesses, some of which fired shots at the creature and followed a trail of blood and 16-inch footprints to the edge of Lake Worth where they disappeared into the water. For four months, the creature roamed about, jumping on cars, snapping tree limbs, and causing chaos in general. Some blamed the unexplained beast for dead sheep in the area.

In late 1969, local resident Sallie May Greer published a book about the monster entitled "The Lake Worth Monster of Greer Island, Ft. Worth, Texas". She spent months soliciting reports about the creature from other residents. In 1978, a reported "photo" of the Lake Worth Monster began circulating, though it has never been proved as a conclusive picture of the best.

Over the years, many have attempted to explain just what the people of Fort Worth saw in the summer of 1969. Some have written it off as a bobcat, or possibly a large ape, while other believe it to be a hoax entirely. However for most of the eyewitnesses, it's a story of frenzied fear of a mysterious monster that roamed the Lake Worth area. And though sightings of the creature haven't been reported since 1969, save one lone encounter in late 1977, the citizens of Fort Worth live with the knowledge that the monster existed, but the fear that it may someday come back."

Sources:

http://en.wikipedia.org/wiki/Lake_Worth_monster
http://www.texasbigfoot.com/Fate1092.html
http://www.subversiveelement.com/LakeWorthMonster.html