In back door meetings that concluded late last night, Connecticut lawmakers struck a long-awaited deal on gun legislation that they plan to unveil to the legislature today.

The legislation, which was first proposed following the Dec. 14 shooting at Sandy Hook Elementary School, will likely contain new gun restrictions as well as changes to the state’s mental healthcare system and additions to its school security apparatus. Many expect that the bill will broaden the state’s ban on assault-style weapons and ban the sale of ammunition magazines containing more than 10 bullets. Such laws would make Connecticut’s gun control laws some of the tightest in the nation.

The bill — whose provisions are being kept secret — will be viewed by both chambers of the legislature today before top Democratic and Republican lawmakers meet one final time. They will likely announce what they will debate and vote on later in the week.

The legislature is expected to vote on the final bill on Wednesday.