[RSMo. §§575.200.1, 575.210.1]
A. A person
commits the offense of escape from custody or attempted escape from
custody if, while being held in custody after arrest for any offense,
he escapes or attempts to escape from custody.
B. A person
commits the crime of escape or attempted escape from confinement if,
while being held in confinement after arrest for any crime, or while
serving a sentence after conviction for any crime, he escapes or attempts
to escape from confinement.