A brazen intruder who allegedly sexually assaulted a 71-year-old woman in her bed after sneaking through a window into her Brooklyn apartment has been arrested, cops said Thursday.

Servin Maradiaga, 43, crawled into bed with the sleeping victim and began strangling and groping her after he snuck through a kitchen window into her apartment near Berriman St. and Liberty Ave. in Cypress Hills around 2:15 a.m. on August 30, police said.

After assaulting the terrified woman, Maradiaga snatched her pajama pants and fled in what cops described as a “sexually motivated burglary.”

Maradiaga was arrested in Brooklyn around 9 a.m. Thursday, and faces charges including rape, burglary, criminal obstruction of breathing, and aggravated sexual abuse.

Maradiaga lives in East Elmhurst in Queens, ab

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