Belize blue headed snake

[hph]

Hi. Was in Belize and saw a slender snake with a bright blue head. He was standing up about 2' on a sidewalk. Overall probably 6' or so. He had very distinctive markings especially the head. Any ideas on what he could be?

[vjdragonfly]

not really sure, have you looked it up yet?

[poison123]

Leptophis mexicanus? Can't be positive without a pic.