A pair of thieves have been swiping wallets from female subway riders along the 7 train line in Queens, police say. One suspect has been arrested, and now investigators are hoping the public can help them find the second.

All the incidents occurred during the afternoon or evening commute in the 108th, 110th and 115th Precincts in February and March. Here are the NYPD's details:

Incident 1: (115 Pct) It was reported to the police that on Tuesday, February 7, 2017 at 1700 hours the victim, a 20-year-old female was aboard a crowded northbound "7" train, when the individual went into her pocketbook and removed her wallet containing debit/credit cards. When the victim arrived home she contacted her bank and had her credit/debit cards canceled.

Incident 2: (115 Pct) It was reported to the police that on Tuesday, February 7, 2017 at 1800 hours the victim, a 40-year old female was aboard the northbound "7" train talking on her cellphone, when the train arrived at the Junction Boulevard Roosevelt Avenue subway station the victim put her cellphone wallet case inside her bag. As the victim exited the train an unknown male bumped into her, and removed her wallet from her bag. The individual remained on the train to parts unknown.

Incident 3: (115 Pct) It was reported to the police that on Tuesday, February 21, 2017 at 1618 hours the victim, a 39-year old female had her cellphone and wallet case in her bag when she boarded the northbound "7" train at the 74 Street and Roosevelt Avenue subway station. When she detrained at the 103 Street subway station she noticed her cellphone and case was missing. The victim's husband received numerous alerts on his cellphone for unauthorized transaction.

Incident 4: ( 108 Pct) It was reported to the police that on Thursday, February 23, 2017 at 1740 hours the victim, a 58-year old female was on the northbound platform at the 45 Road and Jackson Avenue subway station awaiting for the "7" train. The victim had her headphones contacted to her cellphone which was in her bag. As the train exited the station, the victim noticed her headphones wire was hanging outside of her bag and her cellphone was gone.

Incident 5: (108 Pct) It was reported to the police that on Tuesday, February 28, 2017 at 1720 hours the victim, a 28-year old female was on the northbound platform at the Queens Borough Plaza subway station listening to music on her cellphone, which was in her pocket. The victim boarded a crowded "7" train and noticed she couldn't hear music from her cellphone. When she detrained at 46 Street and Queens Boulevard subway station she discovered her cellphone was missing.

Incident 6: (115 Pct) It was reported to the police that on Wednesday, March 8, 2017 at 1740 hours the victim, a 28-year-old female was boarding a local "7" train at 61 Street Woodside Avenue subway Station, when an unknown male pushed her as they both entered the train car. When the victim exited the train at 74 Street and Broadway Station she discovered her wallet was gone.

Incident 7: (115 Pct) It was reported to the police that on Friday, March 10, 2017 at 1710 hours the victim, a 39-year old female had her wallet inside her bag when boarded a crowded northbound "7" train at the 61 Street and Woodside subway station, and when she detrained at 82 Street and Roosevelt Avenue subway station she noticed her bag was unzipped and her wallet was missing.

Incident 8: (110 Pct) It was reported to the police that Wednesday, March 15, 2017 at 1310 hours the victim, a 24-year-old female was on the mezzanine at the 61 Street and Woodside subway station, when secured her wallet in her pocket book. The victim boarded a crowed "7" train and when she transferred at the Broadway and Roosevelt Avenue subway station she noticed her pocketbook was unzipped and her wallet was gone.

Incident 9: (108 Pct) On Thursday, March 16, 2017 at 1725 hours officers from Transit District 20 observed the individual on the platform of the 27 Street and Queens Plaza South subway station reached inside the 33-year-old female victim coat pocket and removed her cellphone. The individual was taken into custody without incident. The investigation remains ongoing.

Police say that William Obregon, 36, was arrested for the 9th incident and was charged with grand larceny, "jostling hand near pocket," and criminal possession of stolen property.

The second suspect is described as a woman who is about 30-35 years old; the NYPD released images of her:

Anyone with information in regards to this incident is asked to call the NYPD's Crime Stoppers Hotline at 800-577-TIPS or for Spanish 1-888-57-PISTA (74782). The public can also submit their tips by logging onto the Crime Stoppers Website at WWW.NYPDCRIMESTOPPERS.COM or texting their tips to 274637(CRIMES) then enter TIP577.