A 20-year-old Indian national, Varun Batchigari, has been arrested in Germany following allegations of first-degree murder for strangling his 19-year-old American girlfriend, Julissa Rubi Salazar, in Arizona. The incident occurred on Thursday inside Salazar's apartment near the University of Arizona in Tucson, as per US media reports. Police were called due to concerns from her family, and upon arrival, they found Salazar unresponsive with trauma signs. Batchigari, Salazar's boyfriend, is believed to be the prime suspect, having reportedly taken her phone and credit cards, sending messages to her mother after the crime. Authorities traced Batchigari to Germany after he fled Tucson, boarding a flight from Tucson International Airport to Houston, then another bound for Berlin. An arrest warrant was issued as investigators tracked his movements. Arizona authorities collaborated with federal agents to locate and detain Batchigari upon his arrival in Germany. He is expected to be extradited to Arizona to face the first-degree murder charge. The case has shed light on Batchigari's alleged abusive relationship with Salazar, as she had been planning to end it due to sexual assault and abusive behavior. Allegations of his previous conduct are also being investigated, including an open criminal case in Pima County Court involving an allegation of assault filed on May 26. Batchigari was a business analytics student at the University of Arizona but was expelled following a fight. He had a history of domestic violence allegations, according to reports. The circumstances surrounding his recent job loss and its impact on his immigration status are under investigation in connection with Salazar's death.