Update, March 24, 5:20 p.m.: The Infosys employee, Raghavendran Ganesan, who went missing after the Brussels attack was on the metro, Minister of External Affairs Sushma Swaraj said in a tweet Thursday.

"Raghavendran Ganesh - We have tracked his last call in Brussels. He was travelling in the metro rail," Swaraj tweeted.

"Raghavendra's brother has reached Brussels. We are trying to trace him," she said in another tweet.

Original Story:

Raghavendran Ganesan, an employee of the Infosys Limited in Brussels, went missing Tuesday morning after the bomb attack at the Maalbeek metro station. The embassy of India in Belgium is trying to locate him, Minister of External Affairs Sushma Swaraj tweeted Wednesay.

The Indian embassy in Belgium carried out search operation for Raghavendran Tuesday evening, but could not locate him, his brother Chandrasekar said in a Facebook post.

Raghavendran was "travelling to office" when his colleagues and family lost contact with him, Raghavendran's colleague Sharan Basav Angadi told International Business Times, India.

"His colleagues in Brussels tried calling him when he didn't come to office yesterday, but it was not reachable," Angadi told IBT.

Raghavendran usually travelled to work in the metro from Merode station to Parc station around 9 a.m. local time, Chandrasekar said in the post.

The bomb blast on the metro at the Maalbeek station occurred around 9:11 am local time, according to ABC News. The suicide bomber had blown himself up when the train was still inside Maalbeek  station.

Maalbeek or Maelbeek, Merode and Parc metro stations are connected through Line 5. Maalbeek metro station comes between Merode and Parc stations.

The Indian embassy in Belgium is trying to find Raghavendran. Swaraj spoke with Raghavendran's mother Annapoorni and assured her "that we will spare no effort to locate her son in Brussels." 

IBT tried to contact Infosys about the updates on the search operation for its colleague, but could not reach it.

The company released an official statement later Wednesday evening, saying it has reached out to all the employees in Brussels to help locate Raghavendran.

"Following the attacks in Brussels, Infosys reached out to all its employees in the city to ascertain their whereabouts and safety...We are in touch with the missing employee's family and are working with the Indian Embassy and local authorities in Brussels to locate our employee on priority," the News Minute cited the statement.

Spoke with my son an hour before the attacks: Raghavendran's mother

"He told me that he was leaving to work. About an hour later I got a call from my other son, who lives in Germany, saying that there was a blast in Brussels. I checked the news. Initially I only saw it was in the airport. But later there were news flashes that there was a blast in the metro line- between Merode to Park station. This is the metro route my son uses to commute to office every day," Annapoorni told the News Minute from Mumbai.

Infosys officials have been in contact with the family and told that the search operation in Brussels is still underway.

"They said that his name does not appear in the casualty list nor in the injured list. They are leaving to one hall where a few attack victims with minor injuries have been lodged for treatment.They are saying some people are conscious some others are unconscious, so I am just hoping the Infosys officials recognise him. His friends are also looking for him in the city," she said.

Three explosions occurred Tuesday morning -- two at the airport and one on metro. At least 31 people were killed and 270 others were injured in the blasts.

Hello.My brother, Raghavendran Ganesan, is missing since morning because of the explosion today. I have talked with...

Posted by Chandrasekar Ganesan on Tuesday, March 22, 2016