A 20-year-old Gresham man has been charged with third-degree rape and other sexual crimes involving children, court documents show.

Armando Isabel Fleming was arraigned Wednesday and charged with four counts of third-degree rape, two counts of first-degree online sexual corruption of a child and one count of luring a minor, according to court documents.

He's being held in the Multnomah County Jail, according to jail records.

Fleming is accused of "sending and soliciting sexually explicit pictures over smartphones" and "taking significant steps to meet with the victims," according to Gresham police.

He engaged in sex with two of the three girls, all younger than 16 at the time, according to court and police documents.

Detectives believe Fleming met the girls while he was a senior at Sam Barlow High School in Gresham and that he continued to contact them after graduation, police said.

Anyone who thinks they or their child had illegal contact with Fleming is urged to call the Gresham Police Department's tip line at 503-618-2719.

-- Jim Ryan

jryan@oregonian.com

503-221-8005; @Jimryan015