monitor lizard/iguana

Today I saw a monitor lizard or iguana crawled into the house. The sliding door was ajar and I heard a sound so I turned around saw the animal quickly made the escape. I was surfing in my net downstairs because I was testing the D-link router in the house. Now I can sit anywhere in the house and I can browse my cyber world. So this iguana about 18 inches long to its tail trying desperately to escape in the garden. I came out with the broom stick but it ran somewhere in the flower pots. I looked high and low but I couldnt find it. I let it be and went back to clock in the net. I have no intention of killing it. I just wanted to let it go somewhere else.