An 18-year-old German charity worker was allegedly sexually assaulted by fellow passenger Chandan Kumar on an Indian train.

Tamil Nadu officials took 22-year-old Chandan Kumar into police custoday after an 18-year-old German reported him for sexual assault, according to a local news outlet.

The young woman, who was traveling from Mangalore to Chennai on Jan. 10, was visiting India to volunteer for a non-governmental agency. The German was reportedly traveling using an RAC ticket, which is similar to a stand-by ticket. 

The 18-year-old and Kumar were assigned to share the lower area of a two-tiered sleeper train.

The German charity worker told authorities that Kumar attacked her while she was asleep, the incident leaving her too "terrified" to scream for help.
She filed a suit against the 22-year-old on Jan. 13.

"The young lady took several days to muster courage to report to the police. Though it's too late for medical examination, we have handled the case in a very sensitive manner," Police Inspector General Seema Agarwal said in an official statement.

Officials tracked down the suspect, a carpenter from Bihar, after searching through the train's passenger logs.

The latest report of rape comes close on the heels of another incident reported this week.

A Danish tourist, 51, was robbed, beaten and gang-raped near a famous New Delhi shopping area after she reportedly got lost and asked a group of men for directions back to the hotel she was staying in the city. A total of 15 men were reportedly taken into police custody in relation with the case, according to a local media outlet.

The number of female tourists visiting India decreased around 30 percent folowing the brutal gang-rape of a 23-year-old Indian woman on a bus, confirmed authorities.