A massive search for Fletcher continues and her family has offered a $50,000 reward for information leading to her whereabouts. The Memphis Police Department announced via Twitter early Sunday that 38-year-old Cleotha Abston has been charged with aggravated kidnapping and tampering with evidence in the case of the missing kindergarten teacher. Police said they arrested Abston Saturday night after he was found inside an SUV wanted by authorities in connection with the kidnapping. A complaint affidavit released Sunday by the Tennessee Bureau of Investigation and obtained by ABC affiliate WATN-TV said Abston was taken into custody outside the home of a woman to whom the SUV is registered and where Abston resided, according to the affidavit. Abston allegedly tried to flee in the SUV, but a team of U.S. Marshals quickly apprehended him, the affidavit states. Earlier Saturday, police contacted Ashton’s brother and another witness, who both claimed the suspect showed up at their home around 7:50 a.m. Friday and saw him cleaning the inside of his SUV, washing his clothes in a sink and “acting very strange,” according to the affidavit. Police, according to the affidavit, suspect Fletcher, 34, suffered “serious injury” during the abduction. During questioning, Abston, who works at a dry cleaners, refused to tell investigators anything about Fletcher’s whereabouts, according to the affidavit. Umpston’s brother, identified as 36-year-old Mario Umpston, who is not currently believed to be connected to the kidnapping, was also arrested on drug and firearms charges, police said. Police said Fletcher is still missing and that they, along with local and federal partners, are continuing to search for her. The investigation into her abduction is “active and ongoing,” police said. Fletcher was last seen jogging in the area of ​​Central Avenue and Zach Curlin Street in downtown Memphis, near the University of Memphis Southwest Tennessee campus, on Friday morning at about 4:20 a.m. local time, before a man approached her and forced her into a dark-colored GMC Terrain, according to police. The SUV took off, traveling westbound on Central Avenue, police said. Fletcher’s husband, Richard Fletcher, reported her missing around 7 a.m. Friday, telling investigators she never returned home from her regular 4 a.m. jog, according to the police affidavit. A bicyclist told investigators he was riding in the area of ​​Central Avenue around 6:45 a.m. Friday and found a cell phone belonging to Eliza Fletcher in the road along with a pair of Champion slides, according to the affidavit. The sandals were tested at the Tennessee Bureau of Investigation’s lab and allegedly contained Cleotha Ampston’s DNA, according to the affidavit. Investigators also went to the location where the biker found Fletcher’s cell phone and sandals and obtained surveillance video from a business they said captured the abduction, the affidavit states. Security video, according to the affidavit, showed the black GMC Terrain initially driven by Fletcher as she jogged and then stop in a parking lot in front of her and wait for her to pass. “A male exited the black GMC Terrain, aggressively ran toward the victim and then forced the victim, Eliza Fletcher, into the passenger side. During this abduction, a struggle appeared to occur,” the affidavit states. Citing the video, investigators said the SUV sat in a parking lot with the victim inside for about four minutes before driving away, according to the affidavit. The video also captured the same SUV in the area of ​​the abduction about 24 minutes before the abduction, according to the affidavit. Fletcher was wearing a pink jogging top and purple running shorts at the time of her abduction. He has brown hair and green eyes, weighs 137 pounds and is 5 feet, 6 inches tall, according to police. After confirming Abston’s DNA on sandals left at the abduction scene, investigators learned the SUV was registered to a woman Abston lived with. Investigators also learned Abston worked at a dry cleaner and got his cell phone number from his boss, according to the affidavit. Investigators determined through cellphone analysis that he was in the area of ​​the abduction when it happened, according to the affidavit. While investigating Abston’s whereabouts before and after the abduction, police obtained security video from a local movie theater that showed Abston there Thursday wearing a pair of Champion sandals, according to the affidavit. St. Mary’s Episcopal School in Memphis said in a statement on social media that Fletcher is a “beloved” kindergarten teacher at the all-girls prep school. Fletcher’s family released a video statement through the Memphis Police Department on Saturday, pleading for her safe return. “We want to start by thanking everyone for their prayers and support,” Fletcher’s uncle, Mike Kinney, said in the video while surrounded by family members, including Fletcher’s parents, brother and husband. “Lisa has touched the hearts of many people and it shows,” he added. The family urged anyone with information about the case to contact authorities. They are offering a $50,000 reward for information leading to Fletcher’s safe return. “More than anything, we want to see Liza come home safely,” Keeney said. “We believe someone knows what happened and can help.” Anyone with information on Fletcher’s whereabouts can call the Memphis Police Department at (901) 528-2274 or (901) 545-2677, the Tennessee Bureau of Investigation at 1-800-TBI-FIND or call 911 . ABC News’ Alexandra Faul and Ahmad Hemingway contributed to this report. 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