article_snippet.sent: According to police records obtained by CNN, two days earlier Tong had accidentally called Li - or 'pocket dialed' him - and him stayed on the line for 30 minutes, overhearing a conversation.
article_snippet.sent: Tong was complaining about Li to a friend and said things that 'were not nice', police records obtained by CNN noted.
article_snippet.sent: Before Li left Iowa, a text from Li phone was sent to one of Tong's roommates. '
article_snippet.sent: This message was purportedly from (Tong) and read that Li had an emergency in China and was flying back there, that Li was going to take a bus to Minnesota to visit friends, and Li would return in about a week,' the police documents stated.
article_snippet.sent: On September 9, Karen Yang, a friend of Li's sent Li a message asking how things were going with Tong. '
article_snippet.sent: Tong's roommate, Jean, filed a missing person report on September 18, when Killed couldn't contact Killed.
article_snippet.sent: Together Killed roommates reached out to Tong's friends in Minnesota via social media, however Tong's roommate, Jean had not heard from Killed.