District police have arrested a 71-year-old man and charged him with groping two women in separate attacks less than an hour apart on Wednesday in Northeast D.C., according to authorities.

And in a separate case, police announced that a DNA hit enabled detectives to arrest a 38-year-old man in connection with a sexual assault on a juvenile that occurred in Northwest in 2003.

In the most recent case, police said they charged Elijah Wallace with misdemeanor sexual abuse after getting two complaints from women who said they were groped — about 7:40 a.m. in the 800 block of Rhode Island Ave NE, near the Rhode Island Metro Station, and again about 8:30 a.m. in the 600 block of H Street NE, six blocks east of Union Station.

District police said both women reported they were accosted while walking along the street.

In the cold case arrest, police said they charged Anthony Lamont Burns of Northwest with first degree sexual assault while armed. Police said the suspect’s DNA was recently linked to the assault. On Monday, July 23, court records show that Burns was sentenced to 18 months in prison on an attempted robbery charge. Police served him with an arrest warrant on Thursday.

Authorities said the sexual assault occurred Jan. 26, 2003, at Iowa Avenue and Allison Street NW, when an adult male approached a female juvenile, threatened her with a knife and sexually assaulted her.