The recent series of terrorist attacks shook more than the streets of London.

Although no injuries were reported, the MSU students who witnessed the city's terror are still sorting through emotional trauma from the event.

Amid the confusion on the streets following Thursday's four bombings, MSU students and faculty members called home and sent countless e-mails to family, friends and university officials to say they were unharmed.

On Thursday, MSU officials said they had accounted for all 324 students and 16 faculty members on study abroad programs near the blasts. Some have since returned home, while 142 students were scheduled to depart for the English cities of London, Cambridge and Brighton during the weekend.

The explosions hit three subway stations and a double-decker bus in rapid succession. Authorities immediately shut down the subway and bus lines that carry 8.4 million passenger trips every weekday.

One blast was in close proximity to the University of London's Connaught Hall, which housed about 60 MSU students, said MSU President Lou Anna K. Simon.

A majority of the students were in class at the time of the blasts, Simon said. By 11 a.m., all but 10 students had been accounted for, and by 1:45 p.m., all but one student, who had skipped class, were accounted for, she said.

"Our sympathies go out to anyone with families who were affected by the tragedy in London," Simon said at a press conference on Thursday.

When students study abroad, Kathleen Fairfax, director of the MSU Study Abroad Program, said they are prepared for emergency situations and given a toll-free number to call. She said university officials maintained contact with students and faculty throughout the day and heard students reacted "quickly and calmly."

Acting Provost John Hudzik said he met with a study abroad safety committee and it was unanimously concluded the situation didn't warrant the cancellation of any programs. He said students wrote e-mails and were "adamant" about continuing their programs. The setup of future study abroad programs will not be affected, he said.

Since the attack, London police said they arrested three men at Heathrow airport under anti-terrorism laws. Police disclosed the arrests during a briefing on their investigation, but cautioned against linking the detentions to the Thursday explosions, in which at least 49 people were killed and 700 wounded.

In Michigan, residents were touched by the events.

Lansing resident Holly David said she was awakened at 5 a.m. by a phone call from her daughter Callie David, a kinesiology junior studying in London. Her daughter said she was unharmed, but she had walked by and saw the wreckage of the bus.

"She was definitely upset - I could tell it in her voice," Holly David said. "I'm just so happy that she's okay, but she's so far away and I can't give her a hug."

Michelle Fransway, a history junior, and Maggie Harris, a social relations and history junior, said a bomb exploded near the building where they were attending class. Both are currently on MSU study abroad programs.

Harris said they could see the explosion and that their dorm overlooks the part of London that officials are now calling a crime scene.

Other students said they were shaken by the terror attacks.

"I was supposed to go into my internship to work early and take the Picadilly Line," telecommunication, information studies and media senior David Lepsetz said in an e-mail.

Lepsetz is on an MSU-sponsored internship program.

"But me and my coworker decided to sleep in an extra half hour," he said.

Fairfax said the university's priority, through faculty members and on-site counselors, is to help students deal with the events.

"People in England have a 'stiff upper lip' mentality," Simon said, referring to their ability to carry on as usual. "Our students are a part of that culture."

Holly David said she worries about the post-traumatic stress of what her daughter saw, but the experience helped her become closer with students in her program.

"The first instinct is that I want her home," Holly David said, adding that her daughter has noted increased city security and wanted to remain in London. "She told me 'I'm not just studying history - I'm in history.'"

The Associated Press and staff writers Mara Deutch and Maddie Trier contributed to this report.

Amy Davis can be reached at davisam8@msu.edu.