Following deadly terrorist bombings in Brussels Tuesday, Massachusetts officials said there is no credible threat in the state. Meanwhile, local law enforcement agencies are stepping up patrols.

"At this point we have no intelligence that suggests any nexus between today's attacks and Massachusetts," state police spokesman David Procopio said in a statement.

At least 30 people were killed and more than 200 were wounded after a series of blasts struck Brussels during the morning rush hour. Two blasts took place at the airport and one took place in a train station.

Procopio said Massachusetts state police are increasing patrols near transportation centers. Additionally, local, state and federal law enforcement agencies are sharing intelligence about the attacks, he said.

"As always, a multi-layered security plan is in place at the airports and seaports," Procopio said.

The MBTA said transit police are "stepping up their vigilance and visibility" at train stations Tuesday.

"Transit Police have more uniformed officers in stations and on train platforms," T spokesman Joe Pesaturo said in a statement. "The 'See Something, Say Something' message is being heard throughout the system to encourage customers to report any unusual activity."

Boston police said they will also be paying close attention to MBTA and commuter rail stations.

"The Boston Police Department has increased presence in the vicinity of transportation hubs throughout the city," Boston Police Commissioner William Evans said in a statement. "At this time we extend our deepest condolences to the people of Brussels. We will keep those lost and injured and their families in our thoughts."

Massport, which oversees Boston's Logan International Airport, did not specify what measures it's taking in the wake of the attacks.

"Security at our facilities is multi layered and constantly evolving," Massport spokesman Matthew Brelis said in a statement. "We do not talk about specific tactics both those that are visible and those that rely on technology. The safety and security of the people who use and work in our facilities is our top priority."

Following Tuesday's attacks, Gov. Charlie Baker expressed condolences to the victims in Brussels.

"​I am deeply saddened to learn of this morning's deadly attacks in Brussels and my thoughts and prayers go out to the victims and their loved ones," Baker said in a statement.

Baker said various agencies will continue to monitor developments in Brussels.

"While there has been no credible threat to our state, Massachusetts law enforcement and homeland security teams continue to work with our federal partners to share and analyze all available intelligence information," Baker said. "Security has been strengthened for our public transit systems and airports and law enforcement teams will remain vigilant to ensure the safety of our citizens."

Boston Mayor Marty Walsh also expressed his condolences to the victims. "Boston stands strong with you," Walsh said in a message on Twitter.