A 25-year-old Las Cruces baby sitter has been arrested after allegedly having sex with a 14-year-old boy in her care.

Annette Martinez has been charged with one count of criminal sexual penetration of a minor, a fourth-degree felony.

Las Cruces police say more charges are pending.

Court records show Martinez told police she was in love with the boy and had sex with him 40 times since she began baby-sitting him and his two siblings earlier this summer.

Court records show the alleged relationship was discovered after the teen went to Martinez's home after arguing with his mother. Martinez allegedly then told the boy's mother about the relationship.

Martinez is being held in jail on a $5,000 bond.