MISHAWAKA — Aaron Trejo, a Mishawaka High School student, allegedly thought for a week about killing 17-year-old Breana Rouhselang, a fellow student who was six months pregnant with his child. Rouhselang's body was found in a dumpster near her home early Sunday morning and Trejo is now accused in her death.

Trejo, 16, was charged Monday with one count of murder and one count of feticide, a Level 3 Felony. Trejo allegedly stabbed and killed Rouhselang after the two got in a fight over her pregnancy. He has been in custody since Sunday morning.

According to a probable cause affidavit, police say Trejo initially denied he met with Rouhselang the night of her disappearance, but when confronted with the physical evidence, eventually told them Rouhselang waited too long to tell him about the baby and it was too late for an abortion.

When asked what he did about it, Trejo reportedly told police, "I took action... I took her life," according to court documents.

Mishawaka police were dispatched to the 400 block of East Lawrence Street around 4:30 a.m. Sunday after Rouhselang's mother reported her missing. Her mother told police Rouhselang had gone behind the house to talk to Trejo who was reportedly the father of the teen's child, according to court documents.

When Rouhselang's mother woke up around 1 a.m. Sunday and her daughter wasn't home, she became concerned and went looking for her. She went to Trejo's home several blocks away, and was told by him that Breana had not shown up when he went to meet her in the ally behind her house, according to the affidavit.

When police arrived at Trejo's home to question him, he also told them he had gone to meet Rouhselang but she did not show up.

Officers returned to the alley behind Rouhselang's home and located glasses and a stocking cap that matched a description given by the girl's mother. After what appeared to be blood was found on the hat, police secured the area.

Officers soon found more blood, which led them to find Rouhselang's body in a dumpster behind Pasquale Rulli's restaurant near Division and Battell streets — only a block away from her home. Her body was found with a trash bag over her head and upper torso, according to court documents.

Trejo and his family were then transported to the St. Joseph County Metro Homicide Unit. Police said Trejo again said he had gone to meet Rouhselang to talk about the pregnancy, but she did not show up. He reportedly told police that neither he nor Rouhselang wanted the baby.

Investigators then confronted Trejo saying they believed he knew more than what he was telling. Police said Trejo then told them he had been thinking about killing Rouhselang and the baby for about a week and had not told anyone. He reportedly told police he chose to stab Rouhselang because he thought it would kill her quickly.

Police said Trejo told them he then walked to the St. Joseph River where he threw the knife and Rouhselang’s cell phone, “as far out into the river as he could.”

An autopsy confirmed Rouhselang died from multiple stab wounds and that her scarf had been tied so tightly that strangulation was occurring before she died, according to court documents. The autopsy also confirmed the pregnancy.

Trejo was a member of the Mishawaka High School football team. Rouhselang was a team manager.

The football team was planning on celebrating its season Sunday evening at a banquet dinner, but as the day unfolded, students and parents learned of the alleged murder of Rouhselang by Trejo.

Instead of a celebratory banquet, "it was a meeting with the football family and coaches and parents to talk about the unfortunate tragedy," said Dean Speicher, superintendent for School City of Mishawaka.

Monday morning, about 200 students at the high school walked out of class and gathered around the school's flag pole in silence to honor Rouhselang. Counselors were available at the school, as well as chaplains from the St. Joseph Health System. Trejo will be arraigned on his charges Tuesday at 1 p.m.

Funeral services for Rouhselang will be at 11 a.m. Monday at New Life Baptist Church, 11593 McKinley Highway, Osceola. Visitation will be from 4 to 8 p.m. Sunday in the church and one hour prior to funeral services on Monday.

Burial will be at Southlawn Cemetery, South Bend.